The Friday evening rush hour has not got off to a good start with severe delays on the M25 already.

Traffic is very heavy clockwise between j21 for the M1 near St Albans and j23 for the A1.

It is because of a broken down lorry between j22 and j23 which has just been cleared.

However, there is a further broken down vehicle between j23 and j24 which means queues stretch all the way round to Potters Bar.

It is also busy anticlockwise on the M25 between j21 and j20 for Kings Langley with stop-start traffic all the way round to the M4.

As a result of delays on the M25, the A414 is busy both ways between the London Colney roundabout and Park Street roundabout, and Potters Bar is pretty gridlocked through the town centre and along Southgate Road.

Slow too on the M1 northbound from j6 for Bricket Wood up to j10.