Current Situation
“Passengers should anticipate longer journey times and delays at interchange stations,” a Transport for London (TfL) spokesperson stated regarding the ongoing issues affecting the northern line.
Severe delays have been reported on the northern line, primarily due to planned maintenance and technical issues. The Bank branch of the line has been experiencing early closures from Camden Town to Kennington since January 12, 2026, as part of essential track replacement work.
Signal Failure and Impact
On the morning of March 12, 2026, a signal failure at East Finchley further exacerbated the situation, leading to significant disruptions. Delays were 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, working diligently to restore normal service. In the meantime, passengers are advised to check before they travel and allow extra time for their journeys.
Alternative Travel Options
To assist commuters during this period, London Buses are accepting Tube tickets while engineers work to rectify the fault. TfL recommends using its journey planner to check updated routes and travel times.
Normal services have resumed on the Bakerloo, Jubilee, and Piccadilly lines, albeit with minor delays. However, uncertainties remain around the duration of the delays on the northern line as repairs continue. Details remain unconfirmed.
