One lane is closed on the North Circular after a crash at the Crooked Billet Underpass

The incident is thought to have taken place at around 3pm on Friday afternoon in the tunnel under the busy roundabout in Walthamstow. 

One lane eastbound is now closed on the A406 while a vehicle is recovered.

It is currently unknown if anyone was injured during the incident.

The crash is however causing long delays on the North Circular, TfL said.

As of 4pm, tailbacks were stretching as far along the road as the Great Cambridge Roundabout underpass in Edmonton.