Grand Union Sets Out Stirling Ambitions
The title of this post, is the same as that of an article in the December 2022 Edition of Modern Railways.
This is the first paragraph.
Grand Union Trains has updated its plans to operate services between Stirling and London Euston. It is targeting a 10-year track access agreement with services starting in May 2025.
I have a few thoughts.
The Route
The route between Stirling and Euston is as follows.
- Trains will call at Larbert, Greenfauds, Whifflet, Motherwell, Lockerbie, Carlisle, Preston, Nuneaton and Milton Keynes.
- Station upgrades are proposed for Larbert, Greenfauds, Whifflet and Lockerbie.
- The route is fully-electrified.
- There will be four trains per day in both directions, with a slightly reduced service on Saturday evenings and Sunday mornings.
This sentence from the article sums up the philosophy of Grand Union Trains.
The company says the aim is to link towns which have no or limited long-distance services and to improve connectivity for some station pairs on the West Coast Main Line.
Note.
Currently Larbert, Greenfauds and Whifflet don’t have services running past Stirling or Motherwell.
- Currently, Nuneaton and Milton Keynes have no Scottish services.
- Nuneaton is well connected to Peterborough and the East.
- Milton Keynes will be on the East-West Railway to Oxford and Cambridge.
It looks to be a service that has been well-planned and offers good possibilities for travel.
The Trains
The article says this about the trains.
New bi-mode rolling stock would be used and GUT says discussions with potential suppliers and manufacturers are ongoing.
Why Are Bi-Mode Trains Needed?
I can think of these reasons.
- Grand Union Trains want to run their South Wales services with the same trains.
- They might want to extend Scottish services from Stirling to perhaps Perth or Dundee.
- They want to offer a reliable service, when the electrification is damaged.
Bi-mode trains will certainly offer flexibility and reliability.
How Long Will The Trains Be?
Consider.
- An eleven-car Class 390/1 train is 265.3 metres long.
- A pair if five-car Class 802 trains is 260 metres long.
I suspect a train has a maximum length of 260 metres and these can be run between London Euston and Stirling.
Could it be that station upgrades are needed for Larbert, Greenfauds, Whifflet and Lockerbie, is that these stations have short platforms?
Could the trains and platforms start short and grow with the business?
The Trains Will Have Three Classes
These classes will be offered.
- First Class in compartments
- Standard in a 2+1 arrangement
- Standard Economy in a 2+2 arrangement
You pays your money and you make your choice.
Vanload Freight May Be Carried
Consider.
- There has been a lot of speculation and some serious train conversions, looking at the possibilities of high speed freight.
- Imagine a train of perhaps five passenger cars and one freight car for containerised freight.
- I suggested earlier, that the trains might grow with the business.
- As business develops, extra cars can be added as appropriate.
- If business booms, then it might be best to run separate passenger and freight services.
Modern trains and refurbished older ones, offer a multitude of solutions.
The Finance
The article says this about finance.
Grand Union Trains has linked with European independent investment firm Serena Industrial Partners to support its ambitions for its new Great Western service, and the project is supported by Spanish operator RENFE.
Serena Industrial Partners are Spanish, so does that mean, that the trains could be Spanish too?
The New Winslow Station Site
This Google Map shows the site of the new Winslow station, on the East West Railway.
Note.
- The line from north of Wolvercote Tunnel (just north of Oxford) through Bicester to Bletchley would be enabled for 100 mph (160 km/h) double-track running.
- There will be two platforms at Winslow station.
- The station is planned to open in 2024.
Services at the station are likely to be.
- Two tph – Oxford and Milton Keynes via Oxford Parkway, Bicester Village, Winslow and Bletchley
- One tph – Oxford and Bedford via Oxford Parkway, Bicester Village, Winslow, Bletchley, Woburn Sands and Ridgmont
Note.
- tph is trains per hour.
- It appears the current Bedford and Bletchley service will continue.
It looks like the one tph service between Aylesbury and Milton Keynes via Aylesbury Vale Parkway, Winslow, Bletchley has been deferred indefinitely.
Consider.
- Building a single track railway between Aylesbury Vale Parkway station and Claydon Junction on the East West Railway can’t be that challenging or expensive.
- A single track railway should be able to handle the required train service of up to two tph at Aylesbury Vale Parkway station and occasional freight trains.
It doesn’t look too difficult or costly. So why? The only valid reason I can think of is that High Speed Two doesn’t want it for some reason.
Will Clapham Junction Station Get A Platform 0?
London has a rail capacity problem, for both freight and passenger trains.
This report from Network Rail is entitled The London Rail Freight Strategy (LRFS).
One of the recommendations of the report is to build a Platform 0 at Clapham Junction station. It says this about that that platform.
Creation of additional bay platform capacity at the northern end of Clapham Junction station, for the use
of London Overground WLL services.
This map from cartometro.com shows the track layout as the orange tentacles of the London Overground approach Clapham Junction station.
Note.
- The West London Line approaches Clapham Junction station through Imperial Wharf station.
- The South London Line approaches Clapham Junction station through Clapham High Street and Wandsworth Road stations.
This second map from cartometro.com shows the track layout of the current two Overground platforms at Clapham Junction station and how the third one will fit in.
Note.
- It appears that there are crossovers to allow trains from either South or West London Lines to enter any of Platforms 0, 1 or 2.
- A typical bay platform can turn four trains per hour (tph) or possibly six tph, if the signalling is tip-top.
These pictures show the current state of Platform 0 at Clapham Junction station.
And these show Platforms 1 and 2 at Clapham Junction station.
The current two-platform system seems to work well.
Clapham Junction Station Is A Super-Interchange
Clapham Junction is already a super-interchange on the London Overground with lots of services to Central and Outer London and the wider South of England.
The London Overground probably needs more super-interchanges on its circular route around London.
- Whitechapel and Stratford, which are one stop apart on Crossrail, could develop into one in East London.
- As it grows, Old Oak Common, will develop into one in West London.
Other super-interchanges could develop at Croydon, Hackney (Central/Downs) and West Hampstead.
Network Rail’s Reasons For The New Platform
I’ll start with some information.
Current Overground Services
Current Overground services are as follows.
- 4 tph – Stratford via Willesden Junction
- 4 tph – Dalston Junction via Surrey Quays
The total of 8 tph, is generally easily handled by two platforms, unless something goes wrong.
Future Overground Services
It is expected that in the future services could be as follows.
- 6 tph – Stratford via Willesden Junction
- 6 tph – Dalston Junction via Surrey Quays
As I regularly use the service between Dalston Junction and Clapham Junction to get a connection to places like Portsmouth and Southampton, I know at least one regular traveller, who is looking forward to the increase in frequency.
But there could be another London Overground in the future.
In Gibb Report – East Croydon – Milton Keynes Route Should Be Transferred To London Overground, I wrote how in his report, Chris Gibb recommended that this hourly service should be transferred to the London Overground.
This is said in the Network Rail document about Platform 0 at Clapham Junction station.
The longstanding proposal for the creation of additional bay platform capacity at the northern end of Clapham Junction station, for the use of London Overground West London Line services, is supported by this strategy.
The scheme would reinstate the disused former platform 1 to create a newly designated ‘Platform 0’, adjacent to the present platforms 1 and 2.
This intervention has been recognised as key to long-term growth on the West London Line by several previous pieces of work for both Network Rail and Transport for London, which have consistently concluded that additional platform capacity at Clapham Junction is needed, if TfL’s aspiration to increase the WLL Overground service to 6 trains per hour is to be met.
Capacity analysis for the LRFS has reaffirmed that the desire to operate this level of service throughout the day cannot be achieved with a single bay platform.
Although this scheme would clearly be of direct benefit to the London Overground passenger service, the positive impact it would have on the capacity and performance of the WLL overall means that it is also very much in the interest of freight that Platform 0 be delivered. Without a new bay platform, the main alternative means to increase Overground train frequencies involves the use of platform 17 at the far end of the station, where freight and GTR trains pass through towards the BML. This is a sub-optimal solution for both freight and passenger operations.
Note.
- Platform 0 will share an island platform with Platforms 1 and 2, so there will be short level walks between trains.
- Platform 1 and 2 are already fully accessible, so Platform 0 will be as well.
The report feels that increasing passenger and freight services are often two sides of the same coin.
Questions
I have some questions.
Would Three Platforms Be Enough To Handle Twelve tph?
As two platforms seem to handle eight tph, at most times in the present, I suspect the answer is in the affirmative.
Would Three Platforms Be Enough To Handle Thirteen tph?
This would be needed, if the Milton Keynes service were to be transferred to the Overground and it used Clapham Junction station as a Southern terminus.
If it still went through Clapham Junction station to Croydon, then it would probably use Platform 17, as it tends to do now!
I do suspect that three platforms will be enough, as otherwise the LRFS would be proposing something else.
What Will Be The Length Of The New Platform 0?
Under Future Proposals in the Wikipedia entry for Clapham Junction station, this is said.
In a Network Rail study in 2015, it was proposed that platform 0 could reopen for 8-car operations of the West London Line.
An eight-car platform would allow the current eight-car Class 377 trains, that work the Milton Keynes service to use the platform.
Note that as an eight-car Class 377 train is 163.2 metres long, a platform that will accomodate this train, will be long enough to accomodate a five-car Class 378 train, which is only 102.5 metres long.
But should the platform be built long enough to handle two Class 378 trains working as a pair?
This Google Map shows Platform 1 and the current state of the future Platform 0 at Clapham Junction station.
Note.
- a five-car Class 378 train is standing in Platform 1.
- There are some minor obstructions along Platform 0.
I don’t think it would be impossible to create an eight-car Platform 0. Although, Platforms 0 and 1 might need to be extended by perhaps ten or twenty minutes towards London.
Does The Milton Keynes and Clapham Junction Service Need 110 mph Trains?
I have talked to several drivers, who drive trains on the four 125 mph lines out of London and some have complained about slower 100 mph trains, that get in their way and slow them down.
If the drivers get miffed, I suspect the train operating companies are more annoyed.
But over the last few years, the following has happened.
- Heathrow Express have replaced 100 Class 360 trains with 110 mph Class 387 trains on the Great Western Main Line.
- East Midlands Railway will be running 110 mph Class 360 trains to Corby on the Midland Main Line.
- West Midlands Trains will be replacing 110 mph Class 350 trains with 110 mph Class 730 trains on the West Coast Main Line.
- Great Northern run 110 mph Class 387 trains to Cambridge and Kings Lynn on the East Coast Main Line.
I wouldn’t be surprised to see 110 mph trains running between Milton Keynes and Clapham Junction, as they would just be following a sensible practice to increase capacity.
Conclusion
I have no problems with creating a new Platform 0 at Clapham Junction, but suspect that faster trains would be needed for the Milton Keynes and Clapham Junction, that would use it.
Work Appears To Have Already Started On Platform 0
With the installation of the all-important site hut and the fact that there were several engineers around with laser-measurement tools, I suspect that work is already underway to prepare everything for the construction of Platform 0 at Clapham Junction station.
Related Posts
These are related posts about the London Rail Freight Strategy (LRFS).
Decarbonisation Of London’s Freight Routes
East Coast Main Line South Bi-Directional Capability
Gauge Improvements Across London
Headway Reductions On The Gospel Oak To Barking, North London and West London Lines
Heavy Axle Weight Restrictions
Kensal Green Junction Improvement
Longhedge Junction Speed Increases
Moving The West London Line AC/DC Switchover To Kensington Olympia
Moving The West London Line AC/DC Switchover To Shepherd’s Bush
Stratford Regulating Point Extension
Will Camden Road Station Get A Third Platform?
Reopening Milton Keynes And Market Harborough Via Northampton
This post was originally part of Shapps Supports Beeching Axe Reversals.
That post takes its name from an article with a similar name in Rail Magazine.
But I now feel it would be better if it became a standalone post.
This route has not been proposed as a Beeching Reversal, but seems to have surfaced from the MP and the local rail group.
I was digging around the Internet looking for the words “Beeching Reversal, I found when this article on the Harborough Mail, which is entitled Harborough Rail Group Says Plan To Reopen Historic Line Is A ‘Excellent Idea’.
This is the introductory paragraph.
Moves to reopen the historic Market Harborough-Northampton railway line are being backed by a local rail passengers’ chief.
The Market Harborough-Northampton Line was only finally closed in 1981.
- It used to connect the two stations with a double-track railway.
- It is about fourteen miles long.
- It is now partly a heritage railway and a walking and cycling route called the Brampton Valley Way.
I have flown my virtual helicopter along the route and can make these observations.
- There is space for a bay platform at Market Harborough station.
- Once clear of Market Harborough, the route appears to be across open countryside.
- The connection to the Northampton Loop Line wouldn’t be too difficult.
The only problem, I can see is that the route into Market Harborough station appears to be tricky.
These are a few of my thoughts.
What Passenger Service Would Be Provided?
Consider.
- The route could certainly handle an hourly shuttle, as does the nearby Marston Vale Line.
- Northampton station currently has three trains per hour (tph) to and from London.
- Timings between Northampton and Market Harborough stations would probably be around twenty minutes.
- Fast services between Northampton and Euston take about an hour.
- Four tph between Northampton and London would probably be desirable.
So could a fourth service to and from London, be extended to Market Harborough station? Or perhaps even Leicester, which already has a platform, where the trains could be turned back?
- I estimate that with a ten minute turnround at Market Harborough, a three hour round trip would be possible and very convenient.
- A single track between Northampton and Market Harborough station would be enough.
- The fourteen miles between the two stations could be handled by a battery-electric train, as there will be electrification at both ends of the route.
- Porterbrook are developing a battery-electric Class 350 train.
At a first glance, this looks to be a very sensible proposition.
This map clipped from Wikipedia, shows the rail line between Milton Keynes Central and Northampton stations.
It is planned to introduce, a service between Marylebone and Milton Keynes Central using the tracks of the East West Rail Link.
- It could be run by East West Rail or Chiltern.
- It might be an easier service to operate as trains wouldn’t need to be turned back at Milton Keynes Central station.
- It might be a better financial option, if services were to be extended to Northampton and Market Harborough.
As the East West Rail Link is being built by a private company, do they have plans to create services between say Leicester and Oxford?
An Alternative Route To Leicester
A London Euston and Leicester service via Watford Junction, Milton Keynes, Northampton and Market Harborough could be run either as a regular service or when there are engineering works on the Midland Main Line.
Bringing Workers To Milton Keynes, Northampton and Leicester
When I moved back to Suffolk forty years ago, trains between Cambridge and Ipswich and Cambridge and Norwich were irregular hourly services using single or two-car trains. The good job prospects available in Cambridge, now mean that Greater Anglia now run four-car Class 755 trains on these routes to an hourly timetable.
Milton Keynes, Northampton and Leicester all need similar connections to stimulate employment.
Could Freight Trains Use The Northampton And Market Harborough Line?
Consider.
- A large rail freight interchange is being developed close to East Midlands Airport.
- The East West Rail Link will be a better route between Southampton Docks and the West Coast Main Line, than the current roundabout routes.
- Multimodal trains need to travel between the East Midlands and Sheffield and Southampton Docks.
- Stone trains need to travel between the North Midlands and West London.
If the Northampton and Market Harborough Line were to be reopened, it would provide a convenient freight route between the Midland Main Line and the West Coast Main Line.
Would the The Northampton And Market Harborough Line Be Electrified?
Consider.
- It joins the electrified Midland Main Line at Market Harborough station.
- It joins the electrified Northampton Loop Line at Northampton station.
- It is only fourteen miles long.
- Most trains should be able to bridge use the line on battery power.
- It will be a new well-surveyed railway, which is easier to electrify.
I suspect, whether the line is electrified will be more down to planning issues.
Would the The Northampton And Market Harborough Line Be Double Track?
The line was double-track when it closed and I think that only planning issues will stop it being reopened as a double track.
Is the Opening Of The Northampton And Market Harborough Line Being Driven By The East West Rail Link?
This is a paragraph from the Rail Magazine article.
Asked by Andrew Lewer (Con) at Transport Questions on October 24 whether he would elaborate on plans to open the proposed Market Harborough line as part of the Oxford to Cambridge expressway he said: “I understand that the reopening is at a formative stage, but I am very supportive of it. Indeed, I support the reopening of many of the smaller lines that were closed as a result of the Beeching cuts under a Labour Government, and I should like to see as many reopened as possible.”
Does that mean that The East West Rail Link is driving this project?
Conclusion
The reopening of Northampton and Market Harborough Line would appear to enable the following.
- Passenger trains between Marylebone and/or London Euston and Market Harborough and/or Leicester.
- Passenger trains between Oxford and Leicester via Milton Keynes, Northampton and Market Harborough.
- An increase to four tph between Northampton and Milton Keynes Central.
- A valuable freight route between Southampton Docks and the East Midlands and South Yorkshire.
It would also provide a connection between the West Coast Main Line and the Midland Main Line.
Reopening of the Northampton and Market Harborough Line could be a nice little earner for the East West Rail Link, if it hosted the following services.
- Freight trains between Southampton Docks and the East Midlands and South Yorkshire.
- Stone trains between the North Midlands and London.
- Passenger trains between Marylebone and/or London Euston and Market Harborough and/or Leicester.
- Passenger trains between Oxford and/or Reading and Market Harborough and/or Leicester.
These sections could also be electrified.
- Basingstoke and Reading
- Didcot Parkway and Oxford
- Oxford and Milton Keynes
- Northampton and Market Harborough
Much of the abandoned Electric Spine would have been created.
The only possible problem I see with this project is connecting the route to Market Harborough station.
East West Railway Company To Start Second Phase Of Rolling Stock Procurement
The title of this post, is the same as that of this press release from East West Rail.
These are the three introductory paragraphs.
East West Railway Company (EWR Co) is to restart market engagement with potential train suppliers, as its rolling stock procurement process enters a new phase.
The move follows an initial phase of procurement activity, which EWR Co concluded earlier in the year. A new PIN Notice has been published today to restart engagement with potential suppliers, which includes a set of technical specifications taking account of feedback from the market gained during the initial procurement phase.
This procurement aims to secure a short-term, interim solution to leasing a small fleet of self-powered trains for the Western Section of East West Rail.
The press release has a link to the Prior Information Notice or PIN Notice on the EU database.
along with all the usual contact and other details, this is said about the specification.
The East West Railway Company (EWR Co.) is looking to leasing a fleet of 12 or 14 x 3 car self-powered units with modifications including European Train Control System (‘ETCS’) Level 2 and Driver Controlled Operation (‘DCO’) capability, supported by a full maintenance package (under a ‘wet’ lease). These units will ensure timely operation of EWR’s Western Section Phase 2 between Oxford, Milton Keynes, Bedford and Aylesbury. The lease duration would be 4 years, with an option to extend for 2 years.
The date of the notice is the 10th of November 2020, so it has been recently updated.
I commented on these trains in March 2020, when I wrote EWR Targets Short-Term Fleet Ahead Of Possible Electrification.
In the intervening eight months, a lot have things have happened.
Awareness Of Green Issues
The Covid-19 pandemic has arrived, with all its ferocity and seems to be moving people in the direction of thinking about green issues and zero-carbon transport.
Type “build back greener UK” into Google and you get lots of articles. Some feature Boris Johnson, like this article on Business Green, which is entitled Boris Johnson To Pledge To ‘Build Back Greener’.
I don’t think the public, myriad engineers and scientists and a good selection of politicians will find it appropriate for the East West Railway to use any rolling stock, that is not zero-carbon and powered by renewable energy.
Hitachi Have Launched The Regional Battery Train In Conjunction With Hyperdrive Innovation
In July 2020, I wrote Hyperdrive Innovation And Hitachi Rail To Develop Battery Tech For Trains.
Hitachi had been talking for some time, that they were developing battery electric trains for the UK, but this was the first news of a route to their design, manufacture and into service.
Hitachi also published this YouTube video and this infographic of the train’s specification.
They have also called the train, the Hitachi Regional Battery Train.
- It has a range of 90 kilometres or 56 miles.
- It is fitted with a pantograph for running on 25 KVAC overhead electrification.
- It can run at up to 100 mph on batteries.
- Three-car Class 385 trains can be fitted with batteries, as I wrote about in Hitachi Plans To Run ScotRail Class 385 EMUs Beyond The Wires, which was written in April 2019.
My estimate is that Oxford and Bedford are under fifty miles apart, so if Hitachi’s train could be charged at both ends of the route, one of their trains could provide a self-powered service between Oxford and Bedford.
It seems that Hitachi have an off-the-shelf train, that fits the specification for the trains required by East West Railway.
Vivarail Have Launched A Fast Charge System
Battery electric trains, like electric vehicles are not much use, if you can’t charge them when it is needed.
The initial Service Pattern of the East West Railway is given in the Wikipedia entry of the East West Railway.
- Two trains per hour (tph) – Oxford and Milton Keynes Central via Oxford Parkway, Bicester Village, Winslow and Bletchley.
- One tph – Oxford and Milton Keynes via Oxford Parkway, Bicester Village, Winslow, Bletchley, Woburn Sands and Ridgemont.
- One tph – Aylesbury and Milton Keynes Central via Aylesbury Vale Parkway, Winslow and Bletchley.
There are four terminal stations.
- Aylesbury – No electrification
- Bedford – Full Electrification
- Milton Keynes Central – Full Electrification
- Oxford – No electrification
The existing electrification could be used at Bedford and Milton Keynes Central, whereas some type of charging system, would be needed at Aylesbury and Oxford.
It appears that Adrian Shooter of Vivarail has just announced a One-Size-Fits-All Fast Charge system, that has been given interim approval by Network Rail.
I discuss this charger in Vivarail’s Plans For Zero-Emission Trains, which is based on a video on the Modern Railways web site.
There is more about Vivarail’s plans in the November 2020 Print Edition of the magazine, where this is said on page 69.
‘Network Rail has granted interim approval for the fast charge system and wants it to be the UK’s standard battery charging system’ says Mr. Shooter. ‘We believe it could have worldwide implications.’
Vivarail’s Fast Charge system would surely be a front-runner for installation at Aylesbury and Oxford, if battery electric trains were to be run on the East West Railway.
Choosing A Train
East West Rail have said the following about the train specification.
- Three cars
- Self-powered
- European Train Control System (‘ETCS’) Level 2 and Driver Controlled Operation (‘DCO’) capability
- Available on a wet lease, that includes a full maintenance package
The press release from East West Rail and other documents mentions between twelve and fourteen trains will be leased.
In Trains Needed For The East West Railway, I calculated that the proposed services could need around eight or nine trains.
This must mean one of three things.
- There are plans for extra services.
- There are plans for the proposed services to be extended.
- Trains will run some services in pairs.
Because, of the last reason, the trains must have the ability to run in pairs.
As sections of the East West Railway are being built for 100 mph operation, the trains must also have a 100 mph capability.
When I talked briefly about green issues earlier, I said that I felt the trains should be zero-carbon, which would rule out diesel.
That leaves two options for self-powered operation; battery electric or hydrogen.
So what trains fit the specification?
British Rail Era Trains
A large number of British Rail era trains could be suitable for updating for interim use on the East West Railway.
I even suspect, some fantasist will suggest using shortened versions of InterCity 125 trains, as are used in South-West England and Scotland.
But let’s be serious and not insult the intelligence of the three world-leading universities on the final route of the East West Railway.
A lot of money is also being spent on this railway and tarted-up forty-year-old trains would not encourage people to use the new railway.
Class 170 Trains
There are eighty-seven three-car Class 170 trains with various operators, some of which will be surplus to requirements, as they are being replaced with new trains.
But they are diesel, so surely they don’t fit my perceived need for zero-carbon trains.
That would have been true until a couple of weeks ago, when as I wrote in Vivarail’s Plans For Zero-Emission Trains, Adrian Shooter of Vivarail disclosed an audacious plan to convert, diesel trains into zero-carbon battery electric trains.
Class 170 trains like this were on the list of possible conversions.
- They 100 mph trains.
- Some are three-cars.
- They meet all the disability regulations.
- They have been used for services much longer than Oxford and Bedford.
They could also start the service as diesel trains and gradually converted to battery electric, if this would be better for operation.
Class 175 Trains
The three-car 100 mph Class 175 trains could be a possibility as there are fifteen trains, but they have two problems.
- They are powered by diesel.
- They probably won’t be available until 2023.
So I think they can be ruled out.
Class 185 Trains
All the fifty-one Class 185 trains are currently in service with TransPennine Express. They are due to release fifteen trains in 2021 and it was thought that these trains were in prime position for becoming the interim trains for East West Railway.
- They 100 mph trains.
- Some are three-cars.
- They meet all the disability regulations.
- They have been used for services much longer than Oxford and Bedford.
- The fleet is the right size.
But then the Department of Transport decided to change their plans for the Liverpool and Norwich service.
I wrote about one journey on the overcrowded section of this service in Mule Trains Between Liverpool And Norwich.
The picture shows the inadequate train formed of an assorted collection of Class 153 trains, I took from Liverpool to Sheffield.
The service is now being split at Nottingham and East Midlands Railway will receive the released Class 185 trains for the Liverpool and Nottingham portion of the service.
A fleet of these Class 185 trains will surely offer more comfort on a very busy service.
So it is looking unlikely that Class 185 trains will be used on the East West Railway.
Class 220, 221 and 222 Trains
These three fleets of Voyager trains could be a possibility, as they can be shortened to three-car trains.
But they have disadvantages.
- They are diesel-powered.
- The diesel engines make a lot of noise for passengers.
- CrossCountry may have an alternative plan for these trains as I wrote about in DfT and Arriva CrossCountry Sign Agreement.
I think it is unlikely, that these trains will be used on the East West Railway.
Class 350 Trains
There are thirty-seven Class 350 trains, that were built only twelve years ago, that have been retired. The owner; Porterbrook are planning to convert them into battery electric versions, which they have called BatteryFLEX trains.
Unfortunately, they are four-cars and unlike other trains, it doesn’t appear that they can be shortened to three cars.
Class 375, 377, 379 and 387 Trains
These four fleets of Electrostar trains could be a possibility for running as battery electric trains.
- Some are three-car trains and four-car trains can be converted to three-car trains, by simply removing a car.
- They are 100 mph trains.
- Bombardier converted a Class 379 train for battery operation and I have heard or seen no adverse reports from either passengers, rail staff or journalists.
- They can work in multiple formations.
- They are all wired for dual-voltage operation.
- Pantographs wells have already been fitted to trains that normally work using 750 VDC third-rail electrification.
The picture shows the Class 379 train, that was converted to battery electric operation.
The Class 379 trains, also have the advantage, that there is a fleet of thirty trains, that are being replaced by Greater Anglia, who are homeless.
If I were the owner of the Class 379 trains, I’d do the following.
- Convert them all into battery electric trains.
- Shuffle cars around to get a mix of three-, four- and five-car trains to match market opportunities.
- Make them compatible with Vivarail’s Fast Charge system.
- Do a licensing deal with Vivarail, so I could supply the chargers.
This plan has some big advantages.
- Battery electric operation of the Class 379 trains has been successfully proven.
- Some Class 379 trains are already available for conversion, as they have been replaced by Greater Anglia.
- The trains could easily be delivered in time for the opening of the East West Railway.
- The trains would not need to be replaced, if the East West Railway was to be fully electrified in the future.
- If I leased out all the Class 379 trains, I’m fairly sure that I could acquire some other Electrostars to convert.
The trains would surely be ideal for the Uckfield Branch and Ashford and Hastings, which are to be run by battery electric trains.
- The order for these services is still to be announced.
- This use would be a trial application of the highest quality.
- I suspect that five-car trains would be ideal for these Southern routes.
- In Battery Electrostars And The Uckfield Branch, I estimated that Southern would need twelve five-car trains for the Uckfield Branch and four trains for the Ashford and Hastings service.
It looks to me, the thirty four-car Class 379 trains could be converted into the following battery electric trains.
- Twelve five-car trains for the Uckfield Branch.
- Four four-car trains for Ashford and Hastings.
- Fourteen three-car trains for the East West Railway.
Using battery electric Class 379 trains for the East West Railway, the Uckfield Branch and Ashford and Hastings. looks from the engineering, numbers and financial points of view to be a very efficient proposition.
Class 385 Trains
As I indicated earlier, Hitachi have the technology to create a Class 385 train with a battery capability.
- They appear to be talking to ScotRail.
- Are they talking to Vivarail about using their Fast Charge system?
- As the trains would be new, East West Railway would get trains to their specification.
Battery electric Class 385 trains must be a serious proposition.
Class 600 Trains
The Class 600 train could be an interesting possibility.
The trains can be powered by both hydrogen and overhead or third-rail electrification.
- The trains are three-cars long.
- They are 100 mph trains.
- First in-service dates are scheduled for 2024, which could be convenient.
- The trains will have a state-of-the-art Renatus interior.
- They will not need charging and could probably be refuelled as infrequently as only once per day.
I am not worried, by the train being powered by hydrogen, but because of the large tanks in the train, the passenger capacity will be lower, than a diesel, electric or battery electric train of a similar length.
I suspect though, that Alstom will be pitching for the order.
Aventras
In this article in Global Rail News from 2011, which is entitled Bombardier’s AVENTRA – A new era in train performance, gives some details of the Aventra’s electrical systems. This is said.
AVENTRA can run on both 25kV AC and 750V DC power – the high-efficiency transformers being another area where a heavier component was chosen because, in the long term, it’s cheaper to run. Pairs of cars will run off a common power bus with a converter on one car powering both. The other car can be fitted with power storage devices such as super-capacitors or Lithium-ion batteries if required. The intention is that every car will be powered although trailer cars will be available.
Unlike today’s commuter trains, AVENTRA will also shut down fully at night. It will be ‘woken up’ by remote control before the driver arrives for the first shift
This was published over nine years ago, so I suspect Bombardier have refined the concept.
Bombardier have not announced that any of their trains have energy storage, but I have my suspicions, that both the Class 345 and Class 710 trains use super-capacitors or Lithium-ion batteries, as part of their traction system design.
I believe that Bombardier, have the ability to build an Aventra to this specification.
- Three-cars
- 100 mph running
- Sixty mile range on battery power.
- Dual voltage.
- Ability to work in pairs.
Like the Hitachi trains, they would be new build.
CAF
CAF have proposed a battery electric train based on the Class 331 train, which I wrote about in Northern’s Battery Plans.
It is a four-car development of the three-car Class 331 trains.
Can it be built as a three-car train to fit the specification?
Conclusion
There are some good candidates sir supplying an interim fleet of trains for the East West Railway.
My money’s on one of the following.
- New Hitachi Class 385 trains
- Converted Class 379 trains.
- New Aventras
All would be battery electric trains.
But there is a change that Alstom’s Class 600 hydrogen trains could be used.
Running Battery Electric Trains Between London Marylebone And Aylesbury
This post was suggested by Fenline Scouser in a comment to Vivarail Targets Overseas Markets, where they said.
I have long thought that one UK application that would make sense is the Marylebone – Aylesbury via Harrow on the Hill service, the intermediate electrified section lending itself to full recharge on each trip. ? stabling facility at Aylesbury with overnight charging.
It does look to be an idea worth pursuing.
Current And Future Services
Currently, the services between London Marylebone and Aylesbury are as follows.
- London Marylebone and Aylesbury via High Wycombe
- London Marylebone and Aylesbury via Amersham
- London Marylebone and Aylesbury Vale Parkway via Amersham
All services are one train per hour (tph)
In the future, it is planned to extend the Aylesbury Vale Parkway service to Milton Keynes, according to information I found on the East West Rail web site.
- It looks like the service will go via High Wycombe, Saunderton, Princes Risborough, Monks Risborough, Little Kimble, Aylesbury, Aylesbury Vale Parkway, Winslow and Bletchley.
- The service will have a frequency of 1 tph.
- Time between Milton Keynes and Aylesbury is quoted as 33 minutes.
- Time between High Wycombe and Milton Keynes is quoted as 63 minutes.
Will this leave the Marylebone and Aylesbury are as follows?
- 1 tph – London Marylebone and Aylesbury via High Wycombe.
- 2 tph – London Marylebone and Aylesbury via Amersham
Passengers between London Marylebone and Aylesbury would have the same service.
Distances
These are a few distances, of which some have been estimated.
- London Marylebone and Harrow-on-the-Hill – 9.18 miles.chains
- Amersham and Harrow-on-the-Hill – 14.27 miles.chains – Electrified
- Aylesbury and Amersham – 15.23 miles.chains
- London Marylebone and High Wycombe – 28.11 miles.chains
- Aylesbury and High Wycombe – 15.28 miles.chains
- Aylesbury and Aylesbury Vale Parkway – 2.25 miles.chains
- Aylesbury Vale Parkway and Calvert – 8.19 miles.chains
- Aylesbury and Milton Keynes – 16.40 miles.chains – Estimated
Note that there are eighty chains to the mile.
Hitachi’s Regional Battery Train
Hitachi’s Regional Battery Train, is the only battery electric train intended for the UK network for which a detailed specification has been released.
This infographic from Hitachi gives the specification.
Note that ninety kilometres is fifty-six miles.
I would suspect that battery trains from other manufacturers, like Bombardier, CAF and Stadler, will have a similar specification.
Battery Electric Trains Between London Marylebone And Aylesbury
I’ll take each possible route in turn.
London Marylebone And Aylesbury Via Amersham
The three sections of the route are as follows.
- London Marylebone and Harrow-on-the-Hill – 9.23 miles – Not Electrified
- Harrow-on-the-Hill and Amersham – 14.34 – Electrified
- Amersham and Aylesbury – 15.29 miles – Not Electrified
Note.
- The total distance is 38.85 miles
- A typical service takes just under twenty minutes to travel between Harrow-on-the-Hill and Amersham. This should be enough to fully charge the batteries.
- A train going South from Harrow-on-the-Hill could reach London Marylebone and return.
- A train going North from Amersham could reach Aylesbury and return.
I am fairly confident, that a battery electric train, with the range of a Hitachi Regional Battery Train could work this route.
London Marylebone And Aylesbury Vale Parkway Via Amersham
The four sections of the route are as follows.
- London Marylebone and Harrow-on-the-Hill – 9.23 miles – Not Electrified
- Harrow-on-the-Hill and Amersham – 14.34 – Electrified
- Amersham and Aylesbury – 15.29 miles – Not Electrified
- Aylesbury and Aylesbury Vale Parkway – 2.31 miles – Not Electrified
Note.
- The total distance is 41.16 miles
- A typical service takes just under twenty minutes to travel between Harrow-on-the-Hill and Amersham. This should be enough to fully charge the batteries.
- A train going South from Harrow-on-the-Hill could reach London Marylebone and return.
- A train going North from Amersham could reach Aylesbury Vale Parkway and return.
I am fairly confident, that a battery electric train, with the range of a Hitachi Regional Battery Train could work this route.
London Marylebone And Aylesbury Via High Wycombe
The two sections of the route are as follows.
- London Marylebone and High Wycombe- 28.14 miles – Not Electrified
- High Wycombe and Aylesbury – 15.35 miles – Not Electrified
Note.
- The total distance is 43.50 miles
- There is no electrification to charge the trains.
A battery electric train, with the range of a Hitachi Regional Battery Train will need charging to work this route.
However, with charging at both ends, this would be a route for a battery electric train.
At the London Marylebone end, there are two possible solutions.
- Electrify the station traditionally, together with perhaps the tracks as far as Neasden, where the routes split. Either 750 VDC third-rail or 25 KVAC overhead electrification could be used.
- Fit fast charging systems into all the platforms at the station.
Note.
- Turnround times in Marylebone station are typically nine minutes or more, so using a charging system should be possible.
- Power for the electrification should not be a problem, as the station is close to one of London’s central electricity hubs at Lisson Grove by the Regent’s Canal.
The final decision at Marylebone, would be one for the engineers and accountants.
At the Aylesbury end, it should be noted that much of the under twenty miles of track between Princes Risborough and Aylesbury and on to Aylesbury Vale Parkway and Calvert us single-track.
So why not electrify from Princes Risborough and Calvert, where the route joins the East West Railway?
The electrification in Aylesbury station could also be used to top-up trains going to London via Amersham.
I would use 25 KVAC overhead electrification, using lightweight gantries like these, which use laminated wood for the overhead structure.
There is also a video.
Electrification doesn’t have to be ugly and out-of-character with the surroundings.
London Marylebone And Milton Keynes Via High Wycombe, Aylesbury and Aylesbury Vale Parkway
The three sections of the route are as follows.
- London Marylebone and High Wycombe- 28.14 miles – Not Electrified
- High Wycombe and Aylesbury – 15.35 miles – Not Electrified
- Aylesbury and Milton Keynes – 16.50 miles – Partially Electrified
Note.
- The total distance is sixty miles
- There is some electrification to charge the trains between Bletchley and Milton Keynes.
A battery electric train, with the range of a Hitachi Regional Battery Train should be able to work this route, if they can work London Marylebone and Aylesbury, with charging at Aylesbury.
Milton Keynes Central is a fully-electrified station.
The picture shows Platform 2A, which is South-facing electrified, five-car platform, which could be used by the Chiltern service.
Train Specification
Consider.
- Chiltern Railway’s workhorse is a Class 168 train, which is a diesel multiple unit of up to four cars, with a 100 mph operating speed.
- The longest leg without electrification could be London Marylebone and Aylesbury via High Wycombe, which is 43.5 miles.
- Hitachi’s Regional Battery Train has a range of fifty-six miles.
- As there is a need to work with London Underground electrification, a dual-voltage train will be needed.
So a battery electric train with this specification would probably be ideal.
- Four cars
- Ability to work with both 750 VDC third-rail and 25 KVAC overhead electrification.
- 100 mph operating speed.
- Battery range of perhaps 55 miles.
Could the specification fit a battery-equipped Class 385 train, which will probably be built for Scotland?
Conclusion
I am convinced that battery electric trains can run between London Marylebone and Aylesbury, Aylesbury Vale Parkway and Milton Keynes stations.
The following would be needed.
- A battery electric range of perhaps fifty-five miles.
- Some form of charging at Marylebone and Aylesbury stations.
I would electrify, the single-track route between Princes Risborough and Aylesbury Vale Parkway.
A London Overground Replacement For Southern’s East Croydon And Milton Keynes Service
In July 2017, I discussed this suggestion by Chris Gibb in Gibb Report – East Croydon – Milton Keynes Route Should Be Transferred To London Overground.
In an article, in the July 2019 Edition of Modern Railways, , which was entitled ‘710s’ Debut On Goblin, this was this last paragraph.
On the West London Line, TfL is curremtly working with the Department for Transport on options for the devolution of services originally suggested in Chris Gibb’s report on the Govia Thameslink Railway franchise, which could lead to ‘710s’ being deployed here.
It made me think, that further investigation was called for.
An Apology
I apologise, if you think I’m repeating myself.
What The Gibb Report Says
The Gibb Report, says this about the current service between East Croydon and Milton Keynes Central stations.
I believe there is an option to transfer the East Croydon – Milton Keynes operation to TfL and it’s London Overground concession in 2018.
TfL may decide to change the service, for example by not running it north of Watford Junction, or running it to an alternative southern destination other than East Croydon. They could also develop the combined West London line service to better match available capacity to demand.
They would have a number of crewing and rolling stock options, but should be able to operate the service more efficiently than GTR in the longer term, without the involvement of Selhurst.
Selhurst TMD is the depot in South London, where the current Class 377 trains are based.
A few of my thoughts.
The Trains
Using Class 710 trains as suggested in the Modern Railways article, would surely offer a suitable crewing and rolling stock option for the route, if they were based at the convenient Willesden TMD, where the fleet of up to twenty-five dual-voltage Class 710/2 trains are stabled.
The Northern Terminus
Chris Gibb suggested the service might not go past Watford Junction.
I think that could be difficult.
- The longitudinal seating of the Class 710 train, is probably not suitable for outer suburban services North of Watford.
- East Croydon to Watford Junction takes 69 minutes, which is not a good journey time to create an efficient service.
It would also appear to be tricky for a train to transfer between the West London Line and the Watford DC Line.
This map from carto.metro.free.fr shows the complicated track layout in the Willesden Junction area.
Note.
- The two Willesden Junction stations, labelled High Level and Low Level.
- The Watford DC Line, which is shown in black and orange, passing to the North of Willesden TMD. and through the Low Level station.
- The four tracks shown in black are the West Coast Main Line, with Watford to the West and Euston to the East.
- The North London Line to Richmond and the West London Line to Clapham Junction splitting at Wilesden High Level Junction.
The current service between East Croydon and Milton Keynes, is only one train per hour (tph) and uses a succession of flat junctions to take the slow lines to and from Watford.
This is not a good operational procedure and I suspect Network Rail and various train operators, would like to see it discontinued.
So if trains in a new London Overground version of the service, don’t go up the Watford DC Line or the West Coast Main Line, where do they turn back?
Note the siding to the East of the High Level platforms, which is labelled Willesden Junction Turnout.
This is regularly used to turnback London Overground services on the West London Line.
I feel that London Overground will be turning their replacement service in Willesden Junction High Level station.
Current train services at the station include.
- For passengers, who want to go further North, there is a good connection to the Watford DC Line for Wembley Central, Harrow & Wealdstone and Watford Junction stations.
- The Watford DC Line can also take you to Euston.
- The Bakerloo Line between Stonebridge Park and Elephant & Castle via Central London.
- Frequent North London Line services between Stratford and Richmond.
The station has kiosks, coffee stalls, toilets and waiting rooms.
There are certainly worse places to change trains.
The Southern Terminus
Obviously, existing travellers on the route would like to see as few changes as possible.
East Croydon station must be a possibility for the Southern terminus, as it is the currently used.
But East Croydon is a busy station and perhaps it is not a convenient station for trains to wait in the platform.
On the other hand, West Croydon station offers some advantages.
- The station has a long bay platform, which might be long enough for nine or ten cars.
- There is a separate turnback siding.
- It has space to add another bay platform, but this may have been sold to a developer.
- It already has a four tph London Overground service to Highbury & Islington station.
- Using West Croydon avoids the crowded lines to the North of East Croydon station.
It is also managed by London Overground, so the landlord would be co-operative.
How Many Trains Would Be Needed For A West Croydon And Willesden Junction Service?
West Croydon station has two possible routes, that trains could take to Willesden Junction.
- Via Norwood Junction and Clapham Junction in 55 minutes.
- Via Selhust and Clapham Junction in 45 minutes.
These times mean that a two-hour round trip between West Croydon and Willesden Junction should be possible.
Trains required for various frequencies would be as follows.
- One tph – Two trains.
- Two tph = Four trains.
- Four tph – Eight trains.
They would need to be dual voltage Class 710/2 trains, as are now running on the Gospel Oak to Barking Line.
Compare the figures with those for the current East Croydon and Milton Keynes service, which needs four pairs of four-car trains for an hourly service.
What Would Be The Frequency?
I think one, two and four tph are all possibilities!
One tph
One tph would be a direct replacement for the current service. But is it enough?
Services at West Croydon could probably share the bay platform with the existing Highbury & Islington station service.
Two tph
Two tph could be a compromise frequency.
Two tph could probably still share the current bay platform with the Highbury & Islington service.
Four tph
Four tph would be a full Turn-Up-And-Go service,
- It would probably be London Overground’s preference.
- It would give a very passenger-friendly eight tph between Willesden Junction and Clapham Junction stations.
- The two services would call at opposite sides of Clapham Junction station.
- It would give a four tph link between Croydon and High Speed Two.
- Westfield wouldn’t mind all the extra shoppers at Shepherds Bush!
But there could be downsides.
- The service could need an extra bay platform at West Croydon.
- Would it be possible to turn four tph at Willesden Junction?
- Will the train paths be available through South London.
But four tph would probably would be London Overground’s preference.
It will be interesting to see the reasons, why Transport for London choose a particular frequency.
A Trip Between Imperial Wharf And East Croydon Stations
Today, I took a trip between Imperial Wharf and East Croydon stations at around 11:30.
- The train was two four-car Class 377 trains working as an eight-car train.
- After Clapham Junction it wasn’t very busy.
- I was in the last car, which was empty, except for myself.
I came to the conclusion, that an eight-car train was too much capacity for the Southern section of the journey.
I suspect that Transport for London have detailed passenger estimates for this route, so they should be able to determine the frequency and length of replacement trains required.
The Upgraded Norwood Junction Station
In Major Upgrade Planned For Norwood Junction Railway Station, I talked about a plan to upgrade Norwood Junction station.
The idea behind the upgrade is to improve connectivity and capacity in the crowded Croydon area.
If the West Croydon and Willesden Junction service, was routed via Norwood Junction station, the upgraded station would give easy access to both East and West Croydon stations.
Conclusion
I’ve always liked Chris Gibb’s suggestion of the transfer of the service between East Croydon and Milton Keynes stations to the London Overground and I can now start to see flesh on the bones!
At the present time and until better data is available, I think the replacement service should be as follows.
- The Northern terminus should be Willesden Junction.
- The Southern terminus should be West Croydon station, where there are good tram and train connections.
- The route would be via Shepherds Bush, Kensington Olympia, West Brompton, Imperial Wharf, Clapham Junction, Wandsworth Common, Balham, Streatham Hill, West Norwood, Gipsy Hill, Crystal Palace and Norwood Junction.
- Going via Gipsy Hill, rather than the current route via Selhurst, would give access to the connectivity at Norwood Junction.
- The frequency should be four tph.
- Trains will be four- or five-car Class 710 trains.
The benefits would be as follows.
- The rail hubs of Clapham Junction, Norwood Junction, West Croydon and Willesden Junction would be connected together by a Turn-Up-And-Go service.
- The proposed four tph service would need eight Class 710 trains, whereas the current one tph service needs eight Class 377 trains. Would this be better value?
In the future with a connection to High Speed Two in the Old Oak Common area, the benefits would increase.
- There would be a simple interchange with High Speed Two.
- South London from Clapham to Croydon, would get a direct service to High Speed Two.
- There would also be a better connection to Heathrow Airport and other rail services through Old Oak Common.
I think that the connection to High Speed Two trumps everything else.
Gibb Report – East Croydon – Milton Keynes Route Should Be Transferred To London Overground
The Gibb Report, says that the East Croydon – Milton Keynes route should be transferred to the London Overground.
By 2020 London will have two high-capacity and two medium-capacity cross-London heavy rail routes, backed up by several cross-London Underground Lines.
- Central Line – 30+ trains per hour (tph)
- District Line – 20+ tph
- Crossrail – 24 tph
- East London Line – 20 tph
- Jubilee Line – 30+ tph
- Metropolitan Line – 20+ tph
- Northern Line – 30+ tph
- North London Line – 16+ tph
- Piccadilly Line – 30+ tph
- Thameslink – 24 tph
- Victoria Line – 30+ tph
One line is missing from this list; the West London Line, which has a rather pathetic four tph between Clapham Junction and Willesden Junction stations.
Until Southern got embroiled in their Driver Only Operation dispute, there used to be a very useful one tph service between East Croydon and Milton Keynes Central stations.
The Gibb Report says this about the service.
I believe there is an option to transfer the East Croydon – Milton Keynes operation to TfL and it’s London Overground concession in 2018.
TfL may decide to change the service, for example by not running it north of Watford Junction, or running it to an alternative southern destination other than East Croydon. They could also develop the combined West London line service to better match available capacity to demand.
They would have a number of crewing and rolling stock options, but should be able to operate the service more efficiently than GTR in the longer term, without the involvement of Selhurst.
Selhurst TMD is the depot in South London, where the current Class 377 trains are based.
I think that this is a good proposal for the following reasons.
- As was seen on the Chingford Branch Line, London Overground have a reputation for making a good fist of taking over services that need improvement.
- As the Gibbs Report says, the combined West London Line service could be developed.
- I have net quite a few people, who use this West London Line route to get to and from events at Wembley stadium.
- The service could call at Old Oak Common station to connect to Crossrail and HS2.
- A variant of London Overground’s new Class 710 trains, could probably work the shortened route, as either four or eight-car trains.
- The Class 710 trains could be based at the convenient Willesden TMD, along with the rest of the fleet.
Being practical, a service of just two tph would give a train every ten minutes on the West London Line.
The Current Service
The current service is supposed to stop at the following stations.
- Bletchley
- Leighton Buzzard
- Tring, Berkhamsted
- Hemel Hempstead
- Watford Junction
- Harrow & Wealdstone
- Wembley Central
- Shepherd’s Bush
- Kensington (Olympia)
- West Brompton
- Imperial Wharf
- Clapham Junction
- Wandsworth Common
- Balham
- Streatham Common
- Norbury
- Thornton Heath
- Selhurst
Note.
- Stations between Watford Junction and Clapham Junction, already have a substantial Overground presence.
- London Overground already run three tph on the Watford DC Line between Euston and Watford Junction stations.
But would this be the ideal route?
The Northern Terminal
The West Coast Main Line is very busy and stations between Watford Junction and Milton Keynes are well-served by London Midland and Virgin Trains.
So would it be sensible to continue a slower local service North of Watford Junction?
It should also be remembered, that Southern introduced the original service to give better access to Gatwick Airport. Surely, this need is now satisfied by services from Clapham Junction and East Croydon.
As Watford Junction station probably has platform capacity, surely Watford Junction should be the Northern terminal
Could The Service Use The Watford DC Line?
If this were possible, this must surely give advantages, especially if Watford Junctio is the Northern terminal.
- Dual-voltage Class 710 trains could work the route.
- The service level on the Watford DC Line would be increased.
- There would be no problem accessing the bay platforms at Watford Junction station.
- There would be no requirement for any paths on the West Coast Main Line.
I think the answer to whether the Watford DC Line could be used at the present time is that trains going from the West London Line to Watford Junction must use the West Coast Main Line.
This map from carto.metro.free.fr shows the lines around Willesden Junction..
As it is all railway land, I suspect that the connection can be created.
The one problem, is that some of the Watford DC Line is shared with the Bakerloo Line.
But as the Bakerloo Line is being extended to the South and the Northern end will probably be improved, then surely creating an optimal solution to the Watford DC line, the Bakerloo Line and Overground services to Watford, makes a lot of sense.
The Southern Terminal
Various stations have merits and problems to be used as the Southern terminal for the service.
Clapham Junction
Clapham Junction would appear to have a strong case, but London Overground had enough problems squeezing in their current services.
As the station is now substantially step-free and has typically three tph to Gatwick Airport, Clapham Junction offers a good route to the airport.
Balham
Balham has been used as a terminal in the past and connects to the Northern Line. If redeveloped for Crossrail 2, it could be a possibility.
Steatham Common
Streatham Common could be developed as a major interchange and if this happens, then surely is is a possibility.
East Croydon
East Croydon would have a strong case, as it is a busy and well connected station, but there probably isn’t a suitable platform.
I think that any station South of East Croydon is probably too far.
My money would be on the new interchange station at Streatham Common, with Balham as an alternative.
Schedules And Trains
I estimate that a train doing a return journey between Watford Junction and Streatham Common would take under three hours, using the Watford DC Line. This would mean that three trains would be needed for an hourly service and six trains for a half-hourly service.
Conclusion
Transferring the East Croydon – Milton Keynes route to the London Overground looks feasible.
Platform Space At Milton Keynes Central
In Future Rail Developments At Milton Keynes, I said that there with all the new services, there would have to be some extra platform space.
So I went to Milton Keynes Central station and took these pictures.
At a quick look there does appear to be more space, than is normal in stations of this size. But then it was only built in 1982.
Platform 2A
The Platforms and Layout section of the Wikipedia entry for the station, says this about the length of Platform 2A.
Platform 2A is a five-car south-facing bay platform.
I would assume, that the car length is the standard British Rail length of twenty metres.
The pictures clearly show that the platform is electrified.