James Francis Nevill ( 20 February 1927 – 12 December 2007 ) was the head of the Scotland Yard Bomb Squad . He was Detective Chief Superintendent in 1975 at the height of a Provisional Irish Republican Army bombing campaign in London , the police cornered four IRA gunmen in a flat in Balcombe Street where they took a middle aged couple hostage . The siege lasted for six days , Nevill was in charge of the negotiations . He also took part in the investigation of the Great Train Robbery in 1963 . He died on 12 December 2007
Great Train Robbery
Great Train Robbery (1963)
Jim Nevill