Update: 'limited service' between Paddington and Reading after all trains cancelled

Update 8.40pm: A 'limited service' has been restored between London Paddington and Reading after all trains were cancelled due to a power outage, Great Western Railway has said. 

A social media update from the company said a 'shuttle service' would call at Slough, Maidenhead and Twyford, in addition to long-distance services. Elizabeth line services remain cancelled, the company added. 

GWR apologised for the ongoing disruption and said passengers who had been delayed for 15 minutes or more could claim compensation through its Delay Repay scheme. 

Update 8pm: Great Western Railway has warned passengers should attempt not travel on its services between London Paddington and Reading until further notice, as a powerline failure causes mass disruption. 

The operator said all lines were blocked and all trains between the two stations have been cancelled. In an update on X, the copmpany apologised for disruption and said engineers were 'working hard to resolve this issue'.

Elizabeth line services between London Paddington and Reading have also been cancelled due to the power failure. Transport for London said there is severe disruption on the rest of the line. 

GWR Tickets will be accepted on South Western Railway services from London Waterloo and Chiltern Railway services from London Marleybone.

More information is available on the GWR website.

All lines have reopened, but disruption is expected following a failure of the electricity supply earlier today (Thursday) at London Paddington.

As a result, trains to and from London Paddington may be cancelled or delayed by up to 15 minutes or revised.

Disruption is expected until 7.30pm.

Great Western Railway received a report of a fault with the Overhead Line Equipment between London Paddington and Southall. 

Overhead Line Equipment is the name given to overhead wires on electrified railway lines that provides power to trains. 

Elizabeth line customers should allow for short-notice alterations and platform changes, and listen to Elizabeth line station announcements or ask a member of staff for further information.

Great Western Railway tickets will be accepted on Elizabeth line services between London Paddington and Reading at no extra cost.

The Elizabeth line is also affected by this disruption.

Customers can check their journey using the National Rail Enquiries real-time Journey Planner.

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.