Jack Slipper Jack Slipper Jack Kenneth Slipper (20 April 1924 in London – 24 August 2005 in Pershore) was a Detective Chief Superintendent in the Metropolitan Police in London. He was known as "Slipper of the Yard" (referring to Scotland Yard). He was mainly known for his role in investigating the Great Train Robbery of 1963, and in tracking down Ronnie Biggs after he escaped from prison in 1965, although he had to leave Brazil without Biggs. Slipper was born in Ealing, west London, and educated at Little Ealing School. He left school aged 14 and worked as an electrician's apprentice until
Great Train Robbery (1963) locomotives on the Southern Region. With no other alternative available to them, it was quickly decided that Mills would have to move the train to the stopping point near the bridge, which was indicated by a white sheet stretched between poles on the track. Ronnie Biggs's only task was to supervise Stan Agate's participation in the robbery, and when it became obvious that Agate was not able to drive the train, he and Biggs were sent to the waiting truck to help load the mail bags. The train was stopped at bridego bridge, and the robbers' "assault force" attacked the