Lines reopened: disruption between London Paddington and Heathrow Terminals / Reading expected until 13:00
Service alteration details
Incident reported: Saturday 26 September 2026 at 11:05
If you would like to follow this incident on X, please useSouthall
Last updated
Saturday 26 September 2026 at 12:27
Train operators affected
- Elizabeth line
- Great Western Railway
- Heathrow Express
Route(s) affected
Elizabeth line between Shenfield and Heathrow Terminal 5, and between Abbey Wood and Heathrow Terminal 4 / Heathrow Terminal 5 / Maidenhead / Reading, and also between London Paddington and Maidenhead
All Great Western Railway routes to / from London Paddington
Heathrow Express between London Paddington and Heathrow Terminal 5
Description
Following a fault with the signalling system at Southall all lines have reopened. As service recovers, trains between London Paddington and Heathrow Terminals / Reading may still be cancelled, delayed by up to 20 minutes or revised.
Disruption is expected until 13:00.
A visual disruption map video is available.
Elizabeth line customer advice:
You can use your ticket at no extra cost on the following alternative train and Underground services:
London Underground services via any reasonable route
Great Western Railway services between London Paddington and Reading (Great Western Railway are also affected by this disruption)
South Western Railway services between London Waterloo and Reading
Heathrow Express between London Paddington and Heathrow Terminals (pre-paid tickets only & Heathrow Express services are also affected by this disruption)
Whilst this disruption is ongoing, buses are a simple and direct alternative. You can use your ticket at no extra cost on the below bus operators:
London Buses between London Paddington and Heathrow Terminals / West Drayton
Alternative travel advice:
West London
(Paddington / Heathrow and Reading)
A key tip is to travel towards Ealing Broadway or Hayes and Harlington for further connections. Key routes include:
Ealing Broadway
207 or SL8 towards West Ealing / Hanwell / Southall
SL8 towards Acton & 266 to Acton Main Line
Southall
SL8 towards Ealing Broadway
105 towards Heathrow Terminals or 195 towards Hayes and Harlington
Hayes and Harlington
SL9 & 278 towards Heathrow Central & 350 towards Heathrow Terminal 5
195 towards Southall
Heathrow Terminals
105 (from Terminals 2/3) or 482 (Terminals 4/5) to Southall
SL9 (from Terminals 2/3) or 350 (Terminals 5) to Hayes and Harlington and West Drayton
West Drayton area
222/U1 to Uxbridge for Underground connections
350 to Hayes and Harlington and Heathrow Terminal 5
Slough area
81 to Hounslow for Underground connections
702 (non-TfL bus) towards Hammersmith and Victoria (last bus 2200)
Carousel Buses Route 103: Slough - Langley (Harrow Market) Operates until 19:00 (
First Bus Route 7: Slough - Langley (Harrow Market) - Heathrow T5. Operates until 23:30 Mon - Sun
First Bus Route 3: Slough - Langley - Uxbridge. Operates until 23:00 Mon - Sat & until 18:40 Sun
Note on Langley (Harrow Market) - The Langley "Harrow Market" bus stop is a short walk away from the station bus stop, close to the town centre, and more likely to be used by customers than the station bus stop.
Great Western Railway customer advice:
You may use your ticket at no additional cost on the following operators:
Elizabeth line services between London Paddington and Reading
Please be advised that some Elizabeth line services may also be affected by the same problem.
Some services between London Paddington and Oxford, will not run, in either direction.
Local stopping services between London Paddington and Didcot Parkway / Newbury will only run between Reading and Didcot Parkway / Newbury.
Most longer distance Intercity services will continue to run between London Paddington and Reading, but may be subject to delay.
Heathrow Express customer advice:
A reduced half hourly service will run between London Paddington and Heathrow Terminals.
Check before you travel:
You can check your journey using the National Rail 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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