#signalling-fault

#signalling-fault

Troubles on London Underground's Northern line that have disrupted journeys for millions of commuters since Sunday could persist into next week, with engineers still baffled by the cause of the signalling fault. Transport for London (TfL) is understood to be considering cancelling the weekend night tube service to allow time for extensive investigations if specialist engineers cannot fix the problem on Thursday night.

All trains into London Stansted Airport have been cancelled or disrupted on Wednesday morning due to signalling issues, National Rail has confirmed. A fault with the signalling system has affected CrossCountry services between Birmingham New Street and Stansted, and Greater Anglia services to and from the airport and London Liverpool Street. The disruption is expected to continue until 08:00 BST, National Rail said, while there are also substantial delays on the M11 and M25 in Essex, potentially impacting passengers.