A crash shut part of the M25 and left a person trapped in a car.

A “serious” crash between a car and a lorry shut the motorway temporarily between J22 for London Colney and J23.

All lanes have since re-opened with delays of over an hour for commuters. Queues to j21A.

There are also long queues on the A414 between the Park Street roundabout and London Colney roundabout.

Hertfordshire Constabulary are at the scene.

More to follow.