A BOY was taking to hospital with life-threatening head injuries after a crash on the M25.

A dark grey Nissan Micra collided with the central reservation between junctions 27 and 28 clockwise near Brentwood shortly after 4pm on Monday.

It travelled across the carriageway and was in collision with a concrete wall on the hard shoulder, before striking the central reservation a second time.

There were two occupants in the car. A young boy was taken by air ambulance to the Royal London Hospital with head injuries, which were described as life threatening.

The male driver was arrested on suspicion of causing serious injury by dangerous driving and driving while under the influence of drink or drugs. He was taken to hospital before being released into police custody.

He remains in custody for questioning.

The road was closed whilst police cleared the scene and was opened at approximately 9pm.

A spokesman for Essex Police said :"We thank drivers for their patience while emergency services have been on scene.

"We thank drivers who have given us witness accounts and dash cam footage.

"We are keen to speak to anyone else who saw what happened, or saw a dark grey Nissan Micra travelling along the M25 before the incident.

"We are also keen to speak to anyone with dash cam footage."

Contact the Serious Collision Investigation Unit on 01245 240590 or email CollisionAppeal@essex.pnn.police.uk.