A dual carriageway has been closed following a crash.

Highways England says the A414 is closed between Hemel Hempstead and the Park Street roundabout near St Albans.

The crash involves a Fiat 500 and a motorbike and police say the motorcyclist is in a life-threatening condition.

Updated story: Motorcyclist seriously injured after crash on A414

The entry slip roads at junction 8 on the M1 are both shut and there is no access onto the A414 towards St Albans from the M1.