London commuters have been told to “avoid the Northern line” as signal failures cause travel chaos in the capital for the fourth day. Travellers using the Northern line have experienced lengthy delays ...

Commuters are facing delays to their journey with several London Underground lines hit with disruption. The Northern line is experiencing severe delays due to a signal fault at Stockwell with ...

According to operator Transport for London (TfL), the Northern line of the Underground is finally running reasonably smoothly again after four days of disruption. Richard Jones, TfL's director of ...