Heathrow Express services were at a stand on Tuesday morning (20 September), with disruption in and out of London Paddington, on Great Western Railway and on the Elizabeth line.

"There are no rail services from Paddington to Heathrow due to overhead power line failures," said Heathrow Express. "Passengers should plan alternative routes to the airport. We will continue to provide updates to passengers when we receive them."

In an update issued shortly after 9.30am, Heathrow Express said: "Services are departing at a reduced frequency due to problem with the overhead line equipment.

"Services are departing at 25 and 55 minutes past the hour. From Heathrow Terminal 5: Services are departing at 12 and 42 minutes past the hour. From Heathrow Central: Services are departing at 17 and 48 minutes past the hour."

Network Rail said passengers travelling to and from Heathrow airport should use the Piccadilly line.

Elizabeth line services are running every 30 minutes and between Paddington and Ealing Broadway, near Heathrow, and Reading and West Drayton, also near Heathrow.