Incident resolved: disruption between London Paddington and Heathrow Airport / Reading expected until 21:30
Service alteration details
Incident reported: Tuesday 11 August 2026 at 19:46
If you would like to follow this incident on X, please useSouthall
Last updated
Tuesday 11 August 2026 at 21:13
Train operators affected
Route(s) affected
Elizabeth line between Abbey Wood and Heathrow Terminal 4 / Maidenhead / Reading, and also between Shenfield and Heathrow Terminal 5
All Great Western Railway routes to / from London Paddington
All Heathrow Express routes to / from London Paddington
Description
The fault with the signalling system in the Southall area has now been rectified. Trains running between London Paddington and Heathrow Airport / Reading may still be cancelled, delayed by up to 10 minutes or revised.
Disruption is expected until 21:30.
Great Western Railway customer advice:
Your ticket can be used, at no extra cost on the following:
Elizabeth line between London Paddington and Reading
If your train is cancelled, you may travel on either of the two services before, or two services after, your original train. If these are peak services or less flexible, you can still travel with your original ticket, at no extra cost.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.
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