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
Ronnie Biggs million in 2017); Biggs's share was £147,000 (equivalent to £ in 2019). With their timetable brought forward due to the police investigation closing in, Biggs returned home on the following Friday, with his stash in two canvas bags. After an accomplice failed to carry out his instructions to burn down Leatherslade Farm to destroy any evidence there, Biggs's fingerprints were found on a ketchup bottle by Metropolitan Police investigators. Three weeks later, he was arrested in South London, along with 11 other members of the gang. In 1964, nine of the 15-strong gang, including Biggs, were jailed for the crime.