DRIVERS in Oxfordshire could be among witnesses police want to speak to in relation to a serious crash on the M25.

Thames Valley Police appealed for information after the crash between junctions 17 and 16 anti-clockwise on Sunday, at about 5.30am.

It said the crash, between a black Mercedes C Class car and a grey Mazda, left a 44-year-old man fighting "serious and life-changing injuries" and is being treated at St Mary’s Hospital in London.

A 25-year-old man from Bedfordshire was arrested on suspicion of causing serious injury by dangerous driving in connection with the collision, and bailed until August 18. 

Witnesses can call police on on 101 or Crimestoppers anonymously on 0800 555 111.