Newport To Swindon Via Gloucester – 14th June 2025
Because of engineering works, we came home from Newport via a diversion through Gloucester.
I took these pictures.
Note.
- I had sat on the right side of the train facing forward.
- We were accompanied my the thud, thud, thud of an underfloor diesel engine, as most of the route is not electrified.
- Newport and Gloucester is 44.8 miles.
- Gloucester and Swindon is 36.7 miles.
- Newport and Swindon is 81.5 miles.
- Newport and Swindon are fully-electrified stations.
- The first four pictures show Trains for Wales Premier Service.
- The Gloucester and Newport Line joins the South Wales Main Line at Severn Tunnel Junction station.
- As you travel towards Gloucester, the bridges over the Severn and the Wye can be clearly seen.
- There are two former nuclear power stations ;Berkeley and Oldbury, on the far bank of the River Severn.
- The large white wind turbine is close to Berkeley.
- Oldbury is further down the river.
As yesterday, the route is commonly used as a diversion route, when engineering works close the electrified main line through the Severn Tunnel.
I have some further thoughts.
Electrification Of Newport And Swindon
The distances involved are as follows.
- Newport and Gloucester is 44.8 miles.
- Gloucester and Swindon is 36.7 miles.
- Newport and Swindon is 81.5 miles.
As Hitachi’s Intercity Battery Trains are likely to have a range of around a hundred miles, they should be able to handle the diversion.
A short length of electrification could be erected in Gloucester station to charge any battery-electric trains, that needed a boost.
I believe full electrification is not needed.
FirstGroup Applies To Run Rail Services Between Hereford And London via Cwmbran
The title of this post, is the same as that of this news item from FirstGroup.
These first two paragraphs, add more detail to the title.
FirstGroup plc has submitted the first phase of an application for a new open access rail service between Hereford and London to the Office of Rail and Road (ORR).
FirstGroup plans to expand its open access rail operations as part of its successful Lumo business, building on Lumo’s existing service which has transformed long-distance connectivity between London and Edinburgh. This has helped materially grow rail demand on the East Coast Mainline in recent years, through a new and enhanced choice for customers and providing more trains to more destinations.
These are some more points from the press release.
Route and Frequency
The news item says this about route and frequency.
FirstGroup’s proposal is for two return journeys a day (one on Sundays) between London Paddington and Hereford, calling at Bristol Parkway and Severn Tunnel Junction as well as providing direct London services at Cwmbran, Pontypool & New Inn and Abergavenny.
This OpenRailwayMap shows the route between Bristol Parkway and Pontypool & New Inn stations.
Note.
- Bristol Parkway station is in the South-East corner of the map.
- Severn Tunnel Junction station is marked by the blue arrow in the middle of the map.
- The electrified South Wales Main Line connects Bristol Parkway and Severn Tunnel Junction stations.
- From Bristol Parkway, the electrified Great Western Main Line goes to London Paddington via Swindon and Reading.
- From Severn Tunnel Junction station the South Wales Main Line goes West to Newport, which is on this map and then to Cardiff, Swansea and West Wales.
- Pontypool & New Inn station is in the North-West corner of the map on the Welsh Marches Line between Newport and Crewe stations.
- Welsh Marches Line is connected to the South Wales Main Line at Maindee triangular junction, which is a few miles East of Newport station.
- Cwmbran station is on the Welsh Marches Line between Newport and Pontypool & New Inn stations.
After a quick look on Wikipedia and Real Time Trains, it appears that few if any trains run in either direction between Cwmbran and Severn Tunnel Junction stations using the North-East side of Maindee junction.
Lumo’s trains would use this route to go between Bristol Park and Pontypool & New Inn stations via Severn Tunnel Junction, and Cwmbran.
This second OpenRailwayMap shows the Northern part of the route between Pontypool & New Inn and Hereford stations.
Note.
- The orange track is the Welsh Marshes Line between Newport and Crewe.
- Pontypool & New Inn station is in the South-West corner of the map.
- Abergavenny station is on the West side of the map.
- Hereford station is in the North-East corner of the map.
Looking at the route as a whole, it is a very simple route.
- Trains go as fast as traffic allows, non-stop to Bristol Parkway station.
- Trains then take the South Wales Main Line with a single stop at Severn Tunnel Junction station to Maindee Junction, just to the East of Newport.
- Trains then take the Welsh Marches Line to Hereford stopping at Cwmbran, Pontypool & New Inn and Abergavenny stations.
It is an innovative route, that has these advantages.
- It uses a little-used leg of Maindee Junction.
- London Paddington and Maindee Junction is electrified.
- The fastest Hitachi trains seem to take about one hour and forty minutes between London Paddington and Maindee Junction.
As direct trains between Newport and Hereford take around fifty minutes, a time of two-and-a-half hours between London Paddington and Hereford could be possible.
This would compare with current Great Western Railway services, which take upwards of two hour and forty-five minutes, which often have a change of train.
Lumo Trains Should Be Faster Between London Paddington And Bristol Parkway
This may seem surprising, but most if not all current services stop between London Paddington and Bristol Parkway, stop at Swindon and Reading.
Cutting out a stop saves a few minutes on the journey.
New Trains
The news item says this about new trains.
The new Hereford service would support further investment in new trains. In December 2024 FirstGroup placed a £500m order for 14 trains from Hitachi Rail in County Durham. The Group has an option for a potential second order of similar size and the Hereford fleet would form part of this option.
Yesterday, I went to North Wales and used Avanti West Coast from Euston. The trains both ways were new Class 805 trains, which are bi-mode versions of Lumo’s Class 803 trains. These Class 805 trains travel all the way between Crewe and Holyhead on their diesel engines, so the much shorter leg between Maindee Junction and Hereford will definitely be in range.
But Hitachi are developing battery-electric versions of these trains and as there-and-back between Maindee Junction and Hereford is only 88 miles, I wouldn’t be surprised in a couple of years that Cwmbran, Pontypool & New Inn, Abergavenny and Hereford stations have a direct electric service from London.
Services At Hereford
The news item says this about services at Hereford station.
For Hereford, the two direct London paths each weekday would increase services on this flow from four today, to six. The new services would help mitigate the current large gaps in the timetable with additional daytime and evening arrivals into London, giving Hereford more regular connectivity. The new services would also provide the stations on the route with new direct journey opportunities to Bristol Parkway.
I also believe it would be a faster, fully electric service.
Services At Abergavenny
The Wikipedia entry for Abergavenny station says this about services at the station.
With a few exceptions, the weekday daytime service pattern typically sees one train per hour in each direction between Manchester Piccadilly and Cardiff Central, with most trains continuing beyond Cardiff to Swansea and West Wales. There is also a two-hourly service between Cardiff and the North Wales Coast Line to Holyhead via Wrexham General. These services are all operated by Transport for Wales. The northbound Premier service from Cardiff to Holyhead calls here on Monday to Fridays but the southbound service does not call here.
Note.
- The station has partial step-free access
- The station has 74 parking spaces.
Two trains in each direction would improve the services at Abergavenny station.
Services At Pontypool & New Inn
The Wikipedia entry for Pontypool & New Inn station says this about services at the station.
On weekdays and Saturdays, there is generally a two hourly service between Holyhead and Cardiff in the middle of the day, with additional peak time services southbound in the mornings and northbound in the evenings for commuters to Newport and Cardiff. These include services between Manchester Piccadilly and West Wales via Crewe and Swansea. From December 2013 the evening northbound Arriva “Premier” service train began to call at Pontypool for the first time. The southbound service in the morning does not call here. On Sundays, an irregular service operates, with 8 trains calling southbound and 10 northbound. These mainly run between Manchester and Cardiff.
Note.
- The station is step-free with lifts.
- The station has 150 parking spaces.
Two trains in each direction would improve the services at Pontypool and New Inn station.
Services At Cwmbran
The Wikipedia entry for Cwmbran station says this about services at the station.
Services that stop at Cwmbran in both directions are all operated by Transport for Wales and include the hourly service between Manchester Piccadilly, Cardiff Central and West Wales and the two hourly service between Holyhead and Cardiff Central. Most Sunday services only run on the former route (there are only two services each way to/from Holyhead).
Note.
- The station is being made step-free with lifts.
- The station has 76 parking spaces.
Two trains in each direction would improve the services at Pontypool and New Inn station.
The Heads Of The Valleys Road
The A465 or Heads of the Valleys Road could be considered the South Wlaes equivalent of the North of England’s M62 Motorway.
This description is from the first paragraph of the Wikipedia entry.
Approximately following the southern boundary of the Bannau Brycheiniog National Park, the Ordnance Survey Pathfinder guide describes it as the unofficial border between rural and industrial South Wales. The A465 provides an alternative route between England and the counties in South West Wales and to the ferries to Ireland.
This Google Map shows its route between Merthyr Tydfil and Abergavenny.
Note.
- Merthyr Tydfil is in the South-West corner of the map.
- Abergavenny is in the North-East corner of the map.
- The full length of the road is just under seventy miles.
- The Heads of the Valleys Road connects to all the towns, that are the Northern termini of the South Wales Metro.
- At it’s Western end, the A 465 connects to the M4 near Swansea.
The news item says this about the tourism benefits of the service.
The new service is expected to have positive economic and social benefits for the communities it serves. Both of FirstGroup’s open access services Lumo and Hull Trains are on track to deliver more than £1.4bn in economic benefits along their routes and FirstGroup hopes to have a similar positive effect for the South Wales and Herefordshire communities.
The service should also provide a convenient link for visitors travelling to the Brecon Beacons/ Bannau Brycheiniog National Park; Blaenavon World Heritage Site and cathedral city of Hereford, driving growth and supporting jobs in the area’s tourism sector.
I do wonder if other tourism related services will be developed at Pontypool & New Inn, Abergavenny and Hereford?
Monmouthshire
This paragraph from the Wikipedia entry for Monmouthshire gives a flavour of the Welsh county.
The county is rural, although adjacent to the city of Newport and the urbanised South Wales Valleys; it has an area of 330 square miles (850 km2) and a population of 93,000. After Abergavenny (population, 12,515), the largest towns are Chepstow (12,350), Monmouth (10,508), and Caldicot (9,813).
I was surprised that the population of the county, was as high as 93,000.
This second paragraph, lists the railway stations.
Monmouthshire is served by four railway stations: in the south are the Severn Tunnel Junction railway station at Rogiet on the South Wales Main Line, which connects South Wales to London; and Chepstow railway station and Caldicot railway station on the Gloucester–Newport line; and in the north, Abergavenny railway station on the Welsh Marches line.
Severn Tunnel Junction and Abergavenny stations will be served by Lumo’s new service.
From my experience of using parkway stations in East Anglia with connections to London, I suspect residents of several towns outside of Monmouthshire will use these two stations for trips to the capital.
Are plans in place for extra parking and bus services?
Travelling To And From Heathrow Airport
I wouldn’t be surprised if Lumo picks up quite a few passengers, who are going to and from Heathrow.
Consider.
- I suspect Severn Tunnel Junction to London Paddington will take about one hour and forty minutes, with just the single stop at Bristol Parkway.
- The Elizabeth Line to the Airport will take 28 minutes and cost £13.90, according to Transport for London.
- The Elizabeth Line is an easy step-free change from National Rail at Paddington.
- Elizabeth Line trains between Paddington and Heathrow are every six minutes.
- It’s not a very long walk at Heathrow between the Elizabeth Line and the terminals.
- Driving from say Monmouth to Heathrow will take about two-and-a-quarter hours and cost you to cross the Severn Bridge and for parking.
If your local Great Western Main Line station is between say Chippenham and Cardiff, you might be surprised at how fast and affordable it can be to go to and from Heathrow by Great Western Railway and Elizabeth Line.
When Lumo starts running to Heathrow, I am sure it will be faster, as the trains will not stop East of Bristol Parkway station.
Running In Conjunction With Services Between London Paddington And Carmarthen
The news item says this about running services in conjunction with Lumo’s services to Carmarthen.
The service would operate in conjunction with the planned service from London to Carmarthen which is due to launch in December 2027, and it is anticipated it could begin at the same time.
Consider.
- Both routes are identical between London Paddington and Maindee Junction.
- Both routes could share depots.
- Hitachi’s trains can split and join with alacrity.
- Class 800, 801, 802 and 803 trains have twenty-six metre cars, which mean a five-car train is 130 metres long.
- Bristol Parkway station has 280 metre long platforms. Pairs of trains could split and join here.
- Seven Tunnel Junction has three 171 metre long platforms. Pairs of trains could not use this station, unless the platforms were lengthened.
- Newport station has three platforms longer than 278 metres. Pairs of trains could split and join here, if the Hereford trains reversed direction.
I suspect if trains split and joined, it would be at Bristol Parkway station.
Note that Bristol Parkway station has 1,800 car park spaces, so Lumo could target passengers wanting to park and take the train to London, Cardiff, Newport and other Welsh destinations.
Co-operation With Great Western Railway
In Does Innovation Get Mr. Ed Miliband Better Prices To Doncaster?, I talked about the ticketing on the East Coast Main Line.
It appears to me, that if you put more seats on a popular route, like King’s Cross and Doncaster, then the availability drives down prices.
I also believe that if the tickets are all available through a common walk-up system, then this fills the seats.
The system has now been applied to the West Coast Main Line and I believe that if Great Western Railway and Lumo collaborated on ticketing, this would improve competition between London Paddington, Bristol Parkway and Cardiff.
There is also the issue of train rescue.
Supposing a pair of five-car Hitachi trains broke down with a fault, that allowed the train to be towed to the nearest station, so that passengers could be disembarked.
Hitachi trains are designed, so that up to twenty-four trains can be joined together in rescue mode.
That would certainly be an impressive sight.
Crafty Electrification On The Rhymney Line
I was puzzled on Wednesday, when I took the Class 231 train to Caerphilly on the Rhymney Line, when I saw no signs of electrification.
These are pictures I took at Caerphilly station.
These two OpenRailwayMaps show the tracks through Caerphilly.
Note.
- The map on the left shows infrastructure, with the Rhymney Line shown in yellow.
- Caerphilly station is in the top third of the map.
- The white section of the Rhymney Line is the Caerphilly tunnel.
- The map on the right shows electrification, with the sections of the Rhymney Line that will be electrified are shown in red.
- Black sections will not be electrified.
- North of Caerphilly, the Rhymney Line is electrified, but through the station and the Caerphilly tunnel, there will be no electrification.
Trains will use battery power, where there is no electrification.
This article on Modern Railways gives more information.
This OpenRailwayMap shows the electrification around Cardiff Central and Queen Street stations.
Note.
- Electrified lines are shown in red.
- Unelectrified lines are shown in black.
- The four-platform Cardiff Queen Street station is marked by the blue arrow in the North-East corner of the map.
- There appears to be no plans for electrification in Cardiff Queen Street station.
- The electrified line across the map is the South Wales Main Line.
- The nine-platform Cardiff Central station sits on the South Wales Main Line.
- The main line platforms at Cardiff Central station are electrified, but it appears that Platforms 6.7 and 8. that will serve the South Wales Metro, will not be electrified.
- The line going to the South-East is the branch to Cardiff Bay station.
- The Southern part of this branch appears to be planned to be electrified. so that it can charge the tram-trains before they return North.
This article on Modern Railways says this about catenary-free sections (CFS) in the electrification of the South Wales Metro.
Catenary-free sections are concentrated on areas where it is disproportionately expensive to erect overhead wires. These include the area around Cardiff Queen Street station and the adjacent junction, which has complicated switches and crossings. North of Queen Street, the Cathays area adjacent to Cardiff University and the hospital would present a significant electromagnetic compatibility challenge, so a CFS avoids this complication. Other catenary-free areas will include Pontypridd, where the station features listed canopies and the track is curved, and around the new depot at Taff’s Well, where there will be a significant number of new switches and crossings as well as challenges around highway bridges.
I am in touch with two major electrification companies and I am sure we’ll be seeing a lot more crafty electrification and the use of battery-electric trains.
More Trains To Carmarthen
The last time, I looked at the number of GWR trains to Carmarthen its Wikipedia entry, it was just a couple.
Today, one train per hour (tph) is shown between London Paddington and Swansea, with this supplementary information.
- 7 trains per day continue to Carmarthen, calling at Gowerton (limited), Llanelli, Pembrey & Burry Port, Kidwelly (limited) and Ferryside (limited)
- On Summer Saturdays, 2 trains per day run to Pembroke Dock, calling at all stations between Carmarthen and Pembroke Dock
In Regulator Approves New Grand Union Train Service From Carmarthen To London Paddington, I talked about the plans of Grand Union Trains to run five trains per day (tpd) between London Paddington and Carmarthen.
This would appear to give a total of twelve tpd between London Paddington and Carmarthen.
This page on the Crown Estate web site is entitled Celtic Sea Floating Offshore Wind, where this is said.
The Government has set an ambition to deliver up to 5GW of floating wind by 2030, with rapid expansion anticipated thereafter.
At The Crown Estate, we are committed to helping the UK achieve its net zero ambitions. To support this, we are excited to deliver a new leasing opportunity in the Celtic Sea for the first generation of commercial-scale floating offshore windfarms – unlocking up to 4GW of new clean energy capacity by 2035, kick-starting industry in the region, and providing power to almost four million homes.
We will be inviting full commercial scale projects up to 1GW, which may be developed in a phased or ‘stepping stone’ approach. Recognising the need to develop the UK supply chain and supporting infrastructure for this nascent technology, this approach is deliberately intended to provide opportunities for growth and investment. This will also facilitate the co-ordination of the necessary infrastructure, such as ports and grid connections, all of which are key to the sustainable development of the UK floating wind sector over the long term.
This leasing opportunity will provide the foundation for greater capacity in the future and help establish an exciting new industrial sector for the UK, creating opportunities for significant new investment in jobs, skills and infrastructure for the communities onshore.
It appears to me, that Great Western Railway and Grand Union Trains both believe that there will be large increase in demand for rail travel between London Paddington and Carmarthen and also along the South Wales Coast.
Grand Union Trains are also proposing the building of a new parkway station at Parc Felindre North of Swansea.
But then this area of South Wales and the Celtic Sea, has the four things needed for the development of up to 5 GW of offshore wind; a lot of wind, a large area of empty sea, steel and deep water ports to assemble all the floating wind turbines.
A Zero-Carbon High Speed Railway Between London Paddington And Carmarthen
Consider.
- The Great Western Railway between London Paddington and Carmarthen is 222.5 miles and trains take around three hours and fifty minutes, which is an average speed of 58 mph.
- Between Bristol Parkway and Reading stations, the operating speed is 125 mph.
- In South Wales, the operating speed is generally between 70 and 100 mph.
- Only the 77.4 miles between Cardiff Central and Carmarthen via Swansea is not electrified.
There is probably scope to increase the operating speed using digital signalling and by improving the track.
I would suspect that a time between London Paddington and Carmarthen of under three-and-a-half hours is possible.
The Range Of Battery-Electric Trains
Hitachi have not been specific about the zero-carbon range of their Intercity Tri-Mode Battery Train, which is described in this Hitachi infographic.
In Stadler FLIRT Akku Battery Train Demonstrates 185km Range, I talk about Stadler’s record-braking Battery-electric; Akku, which covered 185 km or 115 miles.
I suspect that Hitachi’s engineers and those at their battery suppliers; Turntide Technology will be ultra-competitive, so I wouldn’t be surprised that the zero-carbon range of the Hitachi train is very competitive to the Stadler FLIRT Akku.
A hundred mile range would allow electric services to be run on these routes.
- Cardiff and Carmarthen – 77.4 miles
- Chippenham and Bristol Temple Meads and return – 48.8 miles
- Chippenham and Bristol Western-super-Mare and return – 86.9 miles
- Swindon and Cheltenham Spa and return – 86.5 miles
- East Coast Main Line and Hull and return – 72.2 miles
- Plymouth and Penzance – 79.5 miles
- Taunton and Newbury – 89.6 miles
- York and Scarborough and return – 84.1 miles
I am fairly sure that Hitachi will aim for at least a hundred mile battery range for their Intercity Tri-Mode Battery Train.
- This would be competitive with other train manufacturers like Stadler and Siemens.
- They would handle a lot of important routes.
- With development they could probably handle Edinburgh and Inverness.
I can’t wait to have a ride.
UK And Welsh Governments To Explore New Rail Links Between South Wales And England
The title of this post, is the same as that of this press release from the UK Government.
These are the three bullet points.
- UK and Welsh governments today (2 February 2023) announce a new study to improve transport connectivity between south-east Wales and west of England
- the study, backed by £2.7 million of UK government funding, will look at options for new railway stations and rail services on the South Wales Main Line
- this project will focus on relieving congestion on the M4, a vital connector between south Wales and the rest of the UK
The stations are not named, but it is said that they could be between Cardiff and the Severn Tunnel.
The last paragraph changes direction a bit.
Lord Peter Hendy also proposed reviewing the route connecting north Wales to the north-west of England, better connectivity with HS2 and a package of railway improvements to increase connectivity and reduce journey times between Cardiff, Birmingham and beyond.
I find this development very interesting, but typical of the sensible approach one would expect from Lord Peter.
In Could High Speed Two Serve Holyhead?, I looked at the route and came to this conclusion.
London Euston and Holyhead could be a serious proposition.
With some development and a new fast ferry, it could also open up a practical zero-carbon route between Great Britain and Ireland.
Times of four and a half hours between London Euston and Dublin could be possible.
I suspect that time would appeal to green tourists, especially those in First with a good meal.
Regulator Approves New Grand Union Train Service From Carmarthen To London Paddington
The title of this post, is the same as that of this press release from the Office of Rail and Road.
This is the sub-heading of the press release.
The Office of Rail and Road (ORR) has opened up the Great Western Main Line to competition and enabled a significant increase in rail services between London and South Wales.
These points are made in the press release.
- The rail regulator has approved the introduction of new train services between London, Cardiff and South West Wales from the end of 2024.
- The services will be operated by a new open access operator, Grand Union Trains, bringing competition to the Great Western route out of Paddington.
- Passengers travelling between London, Bristol Parkway, Severn Tunnel Junction, Newport, Cardiff, Gowerton, Llanelli and Carmarthen will benefit from an extra five daily return services and greater choice of operator.
- The decision opens up the Great Western Main Line to competition for the first time, with potential benefits in terms of lower fares, improved service quality and innovation for all passengers using the route.
- The application, submitted to ORR in June 2022, was disputed by Network Rail due to concerns about capacity on the network. But following careful consideration and analysis, ORR has directed Network Rail to enter into a contract with Grand Union.
- Grand Union has committed to significant investment in new trains.
- As an ‘open access’ train operator, however, it will not get paid subsidies from public funds, unlike current operators along the route.
ORR supports new open access where it delivers competition for the benefit of passengers. In making this decision, the regulator has weighed this up against the impact on Government funds and effect on other users of the railway, both passengers and freight customers.
These are my thoughts.
The Company
Grand Union Trains have certainly persevered to get this approval.
- The company was created by Ian Yeowart, who previously created open access operators; Alliance Rail Holdings and Grand Central before selling both to Arriva.
- After multiple negotiations with the Office of Road and Rail (ORR), Yeowart must know how to get an acceptable deal.
- Grand Union Trains have a similar application for a service between Euston and Stirling with the ORR.
Grand Union Trains also have a web site.
The home page has a mission statement of Railways To Our Core, with this statement underneath.
At Grand Union we are passionate about Britain’s railways. We are committed to the traditional values of providing a high-quality customer service and a comfortable journey experience at a fair price.
I’ll go with that.
The Financial Backing Of The Company
All the UK’s open access operators are well-financed either by Arriva or First Group.
The ORR would not receive any thanks, if they approved an operator, which duly went bust.
So what is the quality of the financing behind Grand Union Trains?
This article on Railway Gazette is entitled RENFE Looks At Entering UK Rail Market Through Open Access Partnership, which starts with this paragraph.
Open access passenger service developer Grand Union Trains is working with Spain’s national operator RENFE and private equity firm Serena Industrial Partners on a proposed service between London and Wales.
That is fairly clear and would surely help in the financing of Grand Union Trains.
The Route
Trains will run between Carmarthen and London Paddington, with stops at Llanelli, Gowerton, Cardiff, Newport, Severn Tunnel Junction and Bristol Parkway.
A new station at Felindre will replace Gowerton at some time in the future.
There will be five trains per day (tpd).
I have some thoughts and questions about the route
Felindre Station
Felindre station is named in Wikipedia as the West Wales Parkway station, where it is introduced like this.
West Wales Parkway is a proposed railway station north of Swansea, near to the boundaries of the neighbouring principal area of Carmarthenshire, and the villages of Felindre and Llangyfelach. The station is proposed to be situated at the former Felindre steelworks, near Junction 46 of the M4 and A48, and near Felindre Business Park and Penllergaer Business Park. The project is in the planning stages, as part of a wider Department for Transport proposal to re-open the Swansea District line to passenger traffic.
This Google Map shows where, it appears the Felindre station will be built.
Note.
- The Felindre Business Park in the North-West corner of the map, with a Park-and-Ride.
- The M4 running across the bottom of the map.
- The Swansea District Line runs East-West between the motorway and the Business Park.
It looks that the new station could be located on the South side of the Business Park.
When High Speed Two Opens Will Trains Call At Old Oak Common?
When High Speed Two opens, all GWR trains will stop at Old Oak Common station for these connections.
- Chiltern for for Banbury, Bicester, High Wycombe and the West Midlands
- Elizabeth Line for Central and East London and the Thames Valley
- Heathrow Airport
- High Speed Two for Birmingham and the North
- Overground for Outer London
As Old Oak Common will be such an important interchange, I think they should.
Will The Platforms At Carmarthen Station Need Lengthening?
This Google Map shows Carmarthen station.
Note.
- The station has two platforms.
- There are certainly pictures of the station with an InterCity 125 in the station. There is a picture on the Wikipedia entry for Carmarthen station.
These pictures show the station.
I suspect that the station will be upgraded to accommodate Grand Union Trains.
The Trains
An article in the June 2022 Edition of Modern Railways, which is entitled Grand Union Bids For London To Carmarthen, gives these details of the trains.
- Three classes.
- 2023 start for the service.
- Cycle provision.
- Vanload freight will be carried.
- Electric trains could start between London and Cardiff by 2023.
- In 2025, trains could be nine-car bi-modes.
- South Wales-based operation and maintenance.
- 125 full-time jobs created.
It certainly seems to be a comprehensive and well-thought out plan.
I have a few thoughts on the trains.
What Make Of Trains Will Be Procured?
Consider.
- Lumo’s Class 803 trains were ordered from Hitachi in March 2019 and entered service in October 2021.
- So if they ordered their version of the Hitachi trains by the end of 2022, the trains could be in service by July/August 2025.
- It would probably be easier, if the only fast trains on the Great Western Main Line between London and South Wales were all Hitachi trains with identical performance.
But the Spanish backers of Grand Union Trains may prefer Spanish-designed trains assembled in South Wales. So would a bi-mode version of CAF’s Class 397 trains be suitable?
On the other hand, the Carmarthen and Cardiff section of the route without a reverse at Swansea is only seventy-five miles.
This Hitachi infographic shows the Hitachi Intercity Tri-Mode Battery Train.
Consider.
- Charging could be provided at Carmarthen using a short length of electrification or one of Furrer + Frey standard chargers.
- Charging would also use the electrification between London Paddington and Cardiff.
- A nine-car Class 800 or Class 802 train has five engines and a five-car train has three engines.
- The Intercity Tri-Mode Battery Train was announced in December 2022.
- In the intervening two years how far has the project progressed?
- For the last twelve months, Lumo have been running trains with an emergency battery-pack for hotel power. How are the batteries doing, whilst being ferried up and down, the East Coast Main Line?
Can Hitachi configure a train with more than one battery-pack and a number of diesel engines, that has a range of seventy-five miles? I suspect they can.
I suspect that CAF also have similar technology.
There is also a benefit to Great Western Railway (GWR).
If GWR were able to fit out their Class 802 trains in the same way, they would be able to run between Cardiff and Swansea on battery power.
- It is only 45.7 miles.
- Charging would need to be provided at Swansea.
- GWR could still run their one tpd service to Carmarthen.
It looks like both train operating companies could be able to do as Lumo does and advertise all electric services.
What Could Be The Maxmum Range Of A Hitachi Train On Batteries?
This Hitachi infographic shows the Hitachi Regional Battery Train.
Consider.
- It has a battery range of 90 km or 56 miles on the single battery.
- I would expect that by a regional train, Hitachi mean a five car Class 800 or 802 train, like those that go to Cheltenham, Lincoln or Middlesbrough.
- A five-car Hitachi Regional Battery Train would have a battery that could contain power equivalent to 280 car-miles.
- Five-car Class 800 or 802 trains have three engine positions.
- These Hitachi trains have a very sophisticated control system, which I wrote about in Do Class 800/801/802 Trains Use Batteries For Regenerative Braking?
I believe the engineers at Hyperdrive Innovation have designed the battery-packs that replace the diesel engines as simulations of the diesel engines, so they can be a direct replacement.
This would mean that battery-packs could be additive, so the following could apply to a five-car train.
- Two battery packs could have a range of 112 miles.
- Three battery packs could have a range of 168 miles.
GWR generally runs pairs of five-car trains to Swansea, which would be 90 miles without electrification.
If five-car trains with two battery packs, could be given a range of 112 miles, GWR could run an electric service to Swansea.
They could also run to Carmarthen, if Grand Union Trains would share the charger.
What ranges could be possible with nine-car trains, if one battery pack is good for 280 car-miles?
- One battery-pack, gives a range of 280/9 = 31 miles
- Two battery-packs, give a range of 2*280/9 = 62 miles
- Three battery-packs, give a range of 3*280/9 = 93 miles
- Four battery-packs, give a range of 4*280/9 = 124 miles
- Five battery-packs, give a range of 5*280/9 = 155 miles
- Six battery-packs, give a range of 6*280/9 = 187 miles
- Seven battery-packs, give a range of 7*280/9 = 218 miles
Note.
- I have rounded figures to the nearest mile.
- There are five cars with diesel engines in a nine-car train, which are in cars 2,3,5, 7 and 8.
- Diesel engines are also placed under the driver cars in five-car Class 810 trains.
- For the previous two reasons, I feel that the maximum numbers of diesel engines in a nine-car train could be a maximum of seven.
- I have therefor assumed a maximum of seven battery packs.
These distances seem sensational, but when you consider that Stradler’s Flirt Akku has demonstrated a battery range of 243 kilometres or 150 miles, I don’t think they are out of order.
But, if they are correct, then the ramifications are enormous.
- Large numbers of routes could become electric without any infrastructure works.
- Grand Union Trains would be able to run to Carmarthen and back without a charger at Carmarthen.
- GWR would be able to run to Swansea and back without a charger at Swansea.
Prudence may mean strategic chargers are installed.
Rrenewable Energy Developments In South West Wales
In Enter The Dragon, I talked about renewable energy developments in South West Wales.
I used information from this article on the Engineer, which is entitled Unlocking The Renewables Potential Of The Celtic Sea.
The article on the Engineer finishes with this conclusion.
For now, Wales may be lagging slightly behind its Celtic cousin to the north, but if the true potential of the Celtic Sea can be unleashed – FLOW, tidal stream, lagoon and wave – it looks set to play an even more prominent role in the net zero pursuit.
The Red Dragon is entering the battle to replace Vlad the Mad’s tainted energy.
South West Wales could see a massive renewable energy boom.
Grand Union Trains will increase the capacity to bring in more workers to support the developments from South Wales and Bristol.
Cardiff Northwest Corridor Tram-Train Report Published
The title of this post, is the same as that of this article on Railway Gazette.
This is the introductory paragraph.
Proposals have been published for the development of a tram-train network to serve housing developments on the Northwest Corridor between Cardiff and Llantrisant.
And this paragraph describes the route.
The report looks at a route making use of the existing City Line railway from Cardiff and then following a safeguarded former railway alignment to M4 Junction 33 and Creigiau. Possible extensions could run from Creigiau to Cross Inn and Pontyclun and from Cross Inn to Miskin, Talbot Green, Llantrisant and Beddau.
This map shows the route from the City Line to Creigiau.
Note.
- The City Line to Radyr passing through Waun-Gron Park, Fairwater and Danescourt, which is shown in yellow.
- The South Wales Main Line running across the bottom of the map, which is shown in orange.
- The M4 running Westerly from the North-East corner of the map.
- The A4232 runs North-South and meets the M4 at Junction 33.
- Creigiau is in the North-West corner of the map.
The route of the tram-train would follow the route of the disused railway between the City Line and Creigiau, which is shown as a dotted line, identified with the code LTO.
This second map from OpenRailwayMap shows the area around Junction 33 of the M4.
Note.
- The M4 going across the map.
- The A4232 going South from Junction 33.
- The proposed tram-train line passing to the East of Junction 33.
I suspect that as there is a BP petrol station and a Travel Lodge at the junction, there is a lot of scope to create a comprehensive Park-and-Ride hub for Cardiff, that would be served by the new tram-train.
The third OpenRailwayMap shows the various routes from Creigiau.
Note.
- Creigiau is in the South-East corner of the map.
- Cross Inn is in the middle of the map.
- The South Wales Main Line, which is shown in orange, cuts across the the South-West corner of the map.
The ultimate destinations of Miskin, Pontyclun, Talbot Green, Llantrisant and Beddau all have disused railway tracks leading to Cross Inn.
Serving The Royal Mint
The Royal Mint moved to Llantrisant in the late 1960s and it could be served by the tram-train, as it is to the North of the town, close to a disused railway line.
I must admit, I am very surprised, that a company that employs 10,000 people doesn’t have a nearby railway station.
But then the move of the Royal Mail to Wales was planned by Harold Wilson’s government, which was led by a man, who believed that railways were irrelevant and everybody should have their own cars.
Innovative Composite Masts Look To Reduce Cost And Increase Efficiency Of Rail Electrification
The title of this post is the same as that of this article on New Civil Engineer.
This is the sub-title.
Engineering consultancy Furrer+Frey will this week unveil its innovative composite masts for rail electrification, which could revolutionise the way that rail electrification is undertaken.
Other points from the article include.
- Development has been undertaken with Cranfield, Southampton and Newcastle Universities and Prodrive and TruckTrain.
- The project was part funded by the Department for Transport and Innovate UK through the First Of A Kind competition.
- The first composite masts have been created and tested at St Bride’s feeder station, just outside Newport in Wales.
This Google Map shows the area, where the test will take place.
Note.
- The South Wales Main Line crossing the South-East corner of the map.
- Newport station is to the East and Cardiff station is to the West.
- The St. Brides feeder station alongside the railway, by the Green Lane bridge.
I would assume that the connection to the National Grid is via the St. Brides 25 kV Substation in the North-West corner of the map.
The article lists the features of the design.
- A typical steel mast weighs 750 Kg., whereas a composite mast weight just 80 Kg.
- I suspect that these masts can be lifted around by a couple of average workers.
- They have lower wind resistance.
- Piles can be less deep. The prototype piles are 1.25 m., as against many that are over four metres on recent schemes.
- The piles have sensors to detect, when they are out of kilter and need replacing.
- Currently, wonky masts need to be identified by hands-on measurement or observant drivers.
- Two masts have been tested to destruction, to see if they match the theory.
But this to me as an Electrical Engineer is the clincher.
Furrer+Frey GB head of UK projects Noel Dolphin says this about the new design.
When they do take it to a mass manufacturing stage, it will be without carbon fibre inside, which presents another opportunity. The other ultimate goal is that the structure is insulating in itself. It’s another big saving if you can remove the insulators on the electrification cantilevers, as they’re expensive in themselves.
It’s all going the way of much more affordable electrification.
I have a few further thoughts.
The Involvement Of Prodrive
Prodrive are best known for their involvement in motorsport, as the home page of their web site indicates.
But as their site also indicates they get involved in other forms of high-performance disruptive engineering, where their experience is relevant.
Prodrive build the prototypes, but won’t build the production masts, although I suspect, their expertise will be used.
The TruckTrain
TruckTrain is a concept with roots in Coventry University that could be off-beam enough to be the new normal.
I have updated my thoughts on the TruckTrain and it is now in a post called The TruckTrain.
My Conclusion About TruckTrains
I like the concept and I can’t see why it would not be successful worldwide.
The Involvement Of TruckTrain With Furrer+Frey
This puzzled me for a time, as undoubtedly, the TruckTrain will be able to use standard electrification.
But in the TruckTrain leaflet, they mention that the TruckTrain has been designed to use single-track short-terminals.
So did they approach Furrer+Frey to find out about electrifying short terminals and the Swiss company felt TruckTrain was a concept they could support?
Obviously, if the TruckTrain is developed to be a battery-electric train, some mini freight terminals will need the ability to charge the TruckTrain.
Could A TruckTrain Be Used to Support Electrification?
Would a TruckTrain be the ideal support vehicle to erect or repair electrification?
If you take the problem, when the wires have been damaged, a TruckTrain could get to the site at 100 mph, much faster than a truck on the road. It could also have a platform to lift the engineers for inspection and repair.
A TruckTrain could be more than just a transport system.
Conclusion
Furrer + Frey’s lightweight composite electrification masts are a good idea.
Teamed with TruckTrains, they could prove a very powerful freight concept, where new mini freight terminals are needed.












































































