Police were called at around 11am yesterday to Blenheim Road, where the 20-year-old was seriously injured.
The air ambulance was called but the man was taken to hospital by road.
Inspector Jon Vale says that “given the large police presence in the area” he would like to reassure people they’re doing “everything they can “ to investigate.
Anyone with information is asked to contact Surrey Police, or Crimestoppers to remain anonymous.