An investigation is underway following a three-car collision in Horsham.

A purple Ford Fiesta and a black Audi TT collided with each other on A264 Dorking Road Friday evening shortly before 7 o’clock.

The Fiesta was then in collision with a white Fiat 500 which was travelling in the opposite direction.

A 21 year-old passenger in the Ford sustained serious injuries and was airlifted to hospital in a critical condition.

Police are asking anyone with information to phone 101 and they are particularly interested in anyone travelling in a red car towards the roundabout around the time of the collision.