London Paddington: Track defect causes train delays and cancellations

A reduced Elizabeth line service is also running to Heathrow Terminal 4.

Network Rail said engineers discovered the track defect on the high-speed line towards Paddington in the Acton area of west London, adding it had limited the speed which trains could travel, causing delays.

It continued by saying the track would be monitored throughout the day “to ensure trains continue to travel safely”, until it can be replaced, and apologised to passengers for the disruption.

A member of signalling staff being unwell caused further delays, but a replacement staff member was found, Network Rail said.