It happened when a black VW Golf collided with a black and green Caterham 7 kit car on Little Lane.
Both were taken to hospital, one person with injuries which are described as potentially life-threatening.
Surrey Police would like to hear from anyone who witnessed
the accident this lunchtime at around 12,45.
A third person was treated by paramedics for minor injuries
at the scene and a number of roads in the area remain closed.