POLICE are appealing for witnesses following a road traffic collision on the A1306 in North Stifford at around 1.20pm today.

A blue quad bike crashed close to junction 31 of the M25 and the driver has been taken to hospital with a serious head injury, reported to be life changing.

Police have closed the road to traffic and would like to speak to the driver of a black or grey saloon style vehicle that may hold information relating to this incident.

Anyone with information is asked to Chigwell Roads Policing Unit on 101 or Crimestoppers anonymously on 0800 555 111.