There are currently long delays on the M1 due a car crash.

One lane is closed due to an accident on the M1 Northbound at J5 North Western Avenue and Stevenson Way, in Watford.

Emergency services have opened lane one (of two) on the exit slip road after moving the vehicles onto the hard shoulder.

Lane three is closed on the main carriageway.

It is not yet known how many cars were involved or if any injuries were sustained.