Police are appealing for witnesses after a serious collision on a slip road off the A12 near Colchester which has left a motorcyclist with life-threatening injuries.

Officers were contacted at just after 6pm today, Saturday, May 25, following reports a motorbike had been in collision with a tree on the southbound carriageway at Junction 27 A133 slip road.

The rider, a man in his 20s, suffered life-threatening injuries and has been taken to Addenbrooke's Hospital, Cambridge.

Officers remain at the scene and the A133 slip has been closed in both directions.

The crash caused long tailbacks for a time as emergency services dealt with the incident at Cymbeline Way (Avenue Of Remembrance Roundabout).

A police spokesman said: "We are investigating the circumstances that led to the crash and want to hear from anyone who may have witnessed the crash or who has dash cam footage to contact the Stanway Road Policing Unit on 101."