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) prisoners interfere with the warders, and allow Biggs and friend Eric Flower to escape. Seaborne was later caught by Butler and sentenced to four-and-a-half years; Ronnie Leslie received three years for being the getaway driver. The two other prisoners who took advantage of the Biggs escape were captured after three months. Biggs and Flower paid a significant sum of money to be smuggled to Paris for plastic surgery. Biggs said he had to escape because of the length of the sentence and what he alleged to be the severity of the prison conditions. Wilson and Biggs' escape meant that five