A biker is seriously injured in hospital after he was involved in a crash on the M25 this morning.

The motorway was closed anticlockwise near junction 17 for Maple Cross for around seven hours following the collision just before 7am.

The crash involved a white DAF lorry, a black Ford Focus, and a Triumph Tiger motorcycle.

An air ambulance was called to the motorway and landed at the scene. Traffic was stopped in both directions.

The biker, aged in his 30s, has been taken to a hospital in London with serious injuries.

The driver of the Ford Focus, a 57-year-old man from London, has been arrested on suspicion of causing serious injury by dangerous driving. He is currently in police custody.

Police are appealing for witnesses to the crash and in particular any dash cam footage that motorists may have.

Sergeant Martin Kemp, from the Bedfordshire, Cambridgeshire and Hertfordshire Road Policing Unit, said: “We have launched an investigation to determine the cause of the collision, and we have already spoken to a number of witnesses at the scene.

“The collision occurred at a time when a lot of people would be making their way to and from work so I am keen to speak to anyone who witnessed the collision or saw either of the vehicles in the lead up to the collision and has not yet spoken to us.

“If you have a dash cam fitted in your vehicle, we would like to view your footage.”

If you can help, please report information online at www.herts.police.uk/Report quoting ISR 99 of May 15 or Operation Rhone.

The M25 is now completely open. The closure caused long tailbacks on the motorway as well as queues on routes in and around Rickmansworth, Chorleywood, Croxley Green, and Watford.