From David Birt's book 'Steaming Through the 1980s; Steam Resurrected in and around Derby': A4 Pacific locomotive 4468 Mallard in LNER blue livery is pulling into Platform two at Derby Midland station having travelled from Sheffield at the head of 'The South Yorkshire Pullman', to the delight of hundreds of railway enthusiasts. The Mallard steamed to fame in 1938, hitting a 126 mph peak between Grantham and Peterborough - the fastest speed ever achieved by a steam locomotive in the world.