Police are investigating a collision on the A127 on the slip road leading to junction 29 of the M25.
Officers were contacted just after 4.45pm today, Saturday September 19, with reports that a red Ford Focus had been in collision with a black Mercedes on the London-bound carriageway near Great Warley.
It rolled over and left the road.
Four men were inside the Ford Focus and were taken to hospital with minor injuries.
The Mercedes driver was unhurt.
Police hope to reopen the road shortly.
Witnesses who saw the collision or drivers in the area at the time who have dash cam footage are asked to call PC Roy Levett at Chigwell Roads Policing Unit on 101 quoting incident 839 of today’s date.