A 49-year-old lorry driver from Iver is in custody following a crash involving his HGV and three cars early this morning.

It happened shortly before 7am on the M40 between junction 1 and 1a, close to the Denham roundabout and exit slip road to the M25.

A driver of one of the cars, a 47-year-old man from London, was seriously injured during the collision and has been taken to the John Radcliffe hospital in Oxford where he remains in a serious but stable condition. He was driving a black Mercedes.

The other drivers - travelling in a blue Audi and a white Volkswagen Caddy - were uninjured. 

Investigating officer PC Stuart Holt, of the Joint Operations Unit for Roads Policing, said: “I would like to speak to anyone who witnessed the collision or who has any information which could assist our investigation and who has not yet spoken to the police.

“Lane one of three remains closed while officers carry out their investigations and while recovery takes place. We anticipate this should be open soon.

“If you have any information relating to this case, please call 101 quoting reference 178 (18/12) or contact Crimestoppers anonymously on 0800 555 111.”

The driver of the lorry was arrested on suspicion of causing serious injury by dangerous driving, driving while over the prescribed drug limit, and driving while unfit through drink or drugs.