Dramatic images of crash involving police car at SAS Headquarters Pictures show the patrol car on its roof just outside the military base in Herefordshire Updated Three people were hurt when a police car flipped over in a horror crash just outside the entrance of the SAS headquarters. Dramatic images show the patrol car on its roof after it collided with another car on Wednesday evening (April 28). Both cars were travelling on the A480 outside the Credenhill barracks in Hereford which is home to the 11 Special Air Service regiment. Kitchen fitter Luke Payne, 29, was travelling home when he spotted the wrecked cop car.