Mainline steam trains in Great Britain
The most famous steam locomotive operating on the British main line is the 1923 built "Flying Scotsman". After being taken into public ownership in 2004, following a decade long refit it returned to mainline service in 2016. The fastest steam locomotive ever built, the 1938 built "Mallard", was also certified for main line operation briefly in the 1980s.
Norfolk and Western 1218
Norfolk and Western No. 1218 is a steam locomotive that at one time was the strongest-pulling operational steam locomotive in the world. It is a four-cylinder simple articulated locomotive with a 2-6-6-4 (Whyte system) wheel arrangement. The Norfolk & Western Railway built it in 1943 at its Roanoke Shops in Roanoke, Virginia, and was part of the Norfolk & Western's class A fleet of fast freight locomotives. It was retired from regular revenue service in 1959, but Norfolk & Western successor Norfolk Southern Railway operated it in excursion service from 1987 to 1991. Today it is on display at the Virginia Museum of Transportation in Roanoke.