A crash has caused severe delays on the M1 this evening

There has been a collision between a van and a car near Bricket Wood - however all lanes are now open.

There are long queues out of Watford along Stephenson Way, although traffic is now easing.

The A41 is also busy near the M1 at Watford.

There are heavy queues on the M1 heading northbound from J4 - travel time is around an hour.

It means that traffic will be affected heading out of London.

Drivers should be aware though that traffic remains slow on the M1 northbound towards Hemel Hempstead.