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) of course, was not a member of the gang (as defined by receiving an equal share), just an accomplice. Piers Paul Read called the replacement train driver 'Stan Agate', and Stan was apparently the true nickname of the replacement driver. Read, concerned that the robbers may have hurt him, went to see Ronnie Biggs in Brazil to get his details, although was dismayed to find that Biggs did not know his last name and knew and cared very little about him. With the meagre details provided, Read used a detective agency to track down the driver at a town 20