A volunteer is in a serious but stable condition after a cyclist taking part in the RideLodnon event crashed into her.

The crash happened at around 11.15am in Sunday in Epsom Road, Leatherhead, at a crossing point near the junction with The Crescent and Leret Way.

A female rider collided with the marshal who suffered serious injuries.

The marshal was taken to hospital, where she remains in a stable but serious condition.

Surrey Police are now appealing for the rider to come forward, or for anyone who can help identify the rider to contact them.

Anyone with any information, photographs or video footage of the area leading up to and including the incident is asked to call Surrey Police Serious Collision Investigation Unit on 01483 639922, quoting reference PR/P18181165.