Air ambulance called to serious M1 crash near Watford

The East of England Ambulance Service has confirmed it treated four people at the scene of the smash, which saw a van flip onto its side, between junctions 5 and 4 of the southbound carriageway. An ambulance, ambulance officer vehicle, rapid response vehicle, and the Essex and Herts Air Ambulance were sent to the scene at 1.39pm (April 9). View from the traffic. (Image: Contribution) One person was transported to Watford General Hospital by road while three patients were treated and discharged at the scene.

Two cars and a van were involved in the crash, Herts Police confirmed. The van, described as a Luton van - a type of box van used to transport secure loads and often used by people moving house, was left on its side after the smash. Herts Fire and Rescue Service sent fire engines to the scene and worked with the East of England Ambulance Trust to free a person who had become trapped.

Photo taken from the scene this afternoon. (Image: Contribution) All southbound traffic has been stopped while emergency services deal with the crash, resulting in gridlock traffic and long delays for motorists.

The M1 southbound was shut between junction 6 and 1 (Brent Cross), but police have said work is ongoing to reopen the motorway "imminently".