The problem
The stretch between East Putney and Wimbledon — Southfields, Wimbledon Park and Wimbledon — runs on signalling dating back to the 1980s. It fails repeatedly: signal failures, points failures, slow-running and crush-loading.
In 2020, TfL decided not to re-signal this branch as part of its multi-billion-pound modernisation of the central District line — a decision it has quietly restated since, in July 2021 and June 2024. Our branch, along with other western branches, was cut from that programme, and ours still has no funded plan. The track itself was sold to London Underground for £1 in 1994, so TfL owns it; Network Rail maintains the signalling under contract because South Western Railway trains share the line to reach Wimbledon.
Why does it keep failing? The plain-English explainer, with TfL's own admissions →
“But isn't TfL already fixing it?”
During the 2026 Wimbledon fortnight, TfL and Network Rail announced £500,000 to “strengthen signalling on the District line” — heat-protective coatings, upgraded track circuits, better fault-detection comms and drainage works.
It's welcome. But read it carefully: that money patches the ageing signalling to survive a fortnight in the spotlight — it does not replace it. Once the cameras leave, the same decades-old equipment is still there, and the delays come back.
Who can actually fix it
The permanent fix — modern signalling — would cost hundreds of millions of pounds and is currently unfunded. That decision sits with the Department for Transport, not TfL.
And here's the opening: South Western Railway's train operator was taken into public ownership on 25 May 2025. The Government now controls both the operator whose trains share our track and the funding to upgrade the line. The old excuse — that no single body was responsible — is gone.
How we win
This is a winnable fight: the fix is affordable for Government, and the responsibility is now clear. The plan:
- Build the evidence. Every delay logged here is proof that TfL's “Good Service” doesn't match the platform. The bigger the record, the harder it is to wave away.
- Take it to our MP and local press — loudest while the branch is in the Wimbledon spotlight.
- Petition for funding to re-signal the branch and to equip the SWR trains that share the track to run on it.
- The asks to Government: publish the branch's reliability data and a date for the fault-monitoring rollout; publish the business case for re-signalling; then fund it.
Join the campaign
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