He had set up static observation points at night throughout the West Yorkshire force area. Sutcliffe, in his Rover 3.5, drove fast and erratically past one of these observation points in Grosvenor Road, Manningham, at about 11.30 p.m. on 26 June 1980. Thinking the vehicle might be stolen, the two uniformed constables in an unmarked police car gave chase, with speeds reaching 80 m.p.h. They didn’t stop the driver until they reached 6 Garden Lane and found the Rover parked in the driveway.

