The Anonymous Widower

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 shows the track layout as the orange tentacles of the London Overground approach Clapham Junction station.


  1. The West London Line approaches Clapham Junction station through Imperial Wharf station.
  2. The South London Line approaches Clapham Junction station through Clapham High Street and Wandsworth Road stations.

This second map from shows the track layout of the current two Overground platforms at Clapham Junction station and how the third one will fit in.


  1. 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.
  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.


  1. Platform 0 will share an island platform with Platforms 1 and 2, so there will be short level walks between trains.
  2. 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.


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.


  1. a five-car Class 378 train is standing in Platform 1.
  2. 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.

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.


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

Doubling Harlesden Junction

East Coast Main Line South Bi-Directional Capability

Gauge Improvements Across London

Gospel Oak Speed Increases

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

Nunhead Junction Improvement

Stratford Regulating Point Extension

Will Camden Road Station Get A Third Platform?


June 20, 2021 Posted by | Transport/Travel | , , , , , , , , , | 19 Comments