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.
Charles Rous-Marten
He is chiefly known for recording a speed of 102.3 mph on the 'Ocean Mail' special from Plymouth to London hauled by GWR locomotive 3440 City of Truro on 9 May 1904, the first time that a steam locomotive was recorded to have achieved 100 mph.