Class A1 in the London and North Eastern Railway's classification system may refer to any of the following British steam locomotives : The GNR Class A1 or "Gresley A1", a class of 52 Pacific locomotives designed by Sir Nigel Gresley, including Flying Scotsman The LNER Thompson Class A1/1, a single Pacific locomotive designed by Edward Thompson and rebuilt from a Gresley A1 The LNER Peppercorn Class A1, a class of 49 Pacific locomotives designed by A. H. Peppercorn LNER Peppercorn Class A1 60163 Tornado, a new locomotive completed in 2008 See also LNER Pacifics References A1 4-6-2 locomotives