A woman biker remains seriously ill in hospital after a crash on the M26.
She remains in a London hospital with serious injuries while police investigate what happened.
It is believed no other vehicles were involved in the collision which happened just before 3pm yesterday.
Both carriageways were closed to allow the air ambulance to land at the scene.
Anyone who saw the motorcycle, described as a blue Honda Shadow, or who has dashcam footage from the area around the time, is asked to call the Serious Collision Investigation Unit on 01622 798 538, quoting RY/NR/100/19, or email email@example.com