Severe Delays Reported
“Passengers should anticipate longer journey times and delays at interchange stations,” a Transport for London (TfL) spokesperson stated on March 12, 2026, as severe disruptions were reported across the northern line.
The delays stemmed from a combination of planned maintenance and a signal failure at East Finchley, which occurred earlier that morning. The Bank branch of the northern line has been undergoing early closures from Camden Town to Kennington since January 12, 2026, as part of essential track replacement work.
Severe delays were particularly noted between High Barnet and Battersea Power Station, as well as between Mill Hill East and Kennington via Charing Cross. TfL engineers are currently addressing the signal failure at East Finchley, but uncertainty remains around the duration of the delays as repairs continue.
In light of the disruptions, passengers have been advised to check before they travel and allow extra time for their journeys. TfL recommends using its journey planner to check updated routes.
Additionally, London Buses are accepting Tube tickets while engineers work to fix the fault, providing some relief for affected commuters.
Normal services have resumed with minor delays on the Bakerloo, Jubilee, and Piccadilly lines, but the northern line continues to experience significant challenges.
As the situation develops, TfL is expected to provide further updates on the status of the northern line and any additional measures that may be implemented to assist passengers during this period of disruption.