Designed by Sir Nigel Gresley, the LNER Class A3 Pacific locomotive number 4472 “Flying Scotsman” was built in 1923 for the London and North Eastern Railway at Doncaster Works. Later renumbered to 60103 by British Railways following nationalization, it was employed on express trains on the East Coast Main Line from London King’s Cross to Doncaster, Leeds, York, Newcastle-upon-Tyne or Edinburgh. Normally used on the run from London to Edinburgh, the Flying Scotsman traveled over 3,000,000 miles before it was retired in 1963 and has frequently been called “the most famous steam locomotive in the world”.