Harry Beck version of the London Underground diagram. In March 2013 a blue plaque was unveiled on the house where Beck was born, in Wesley Road in Leyton, to mark the 80th anniversary of the Tube map. GB Railfreight named locomotive 66721 after Beck in January 2007. Beck's idea has been emulated by subway, bus and transit companies around the world and many urban rail and metro maps use his principles. He was featured on a BBC2 series called "Map Man" in 2004. Harry Beck Henry Charles Beck (4 June 1902 – 18 September 1974), known as Harry Beck, was an English
Alan Turing been Turing's 86th birthday, his biographer, Andrew Hodges, unveiled an official English Heritage blue plaque at his birthplace and childhood home in Warrington Crescent, London, later the Colonnade Hotel. To mark the 50th anniversary of his death, a memorial plaque was unveiled on 7 June 2004 at his former residence, Hollymeade, in Wilmslow, Cheshire. On 13 March 2000, Saint Vincent and the Grenadines issued a set of postage stamps to celebrate the greatest achievements of the 20th century, one of which carries a portrait of Turing against a background of repeated 0s and 1s, and is captioned: "1937: Alan Turing's