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.
DRG Class E 19
The electric locomotives of the class E 19 (class 119 from 1968) were the fastest electric locomotives of the Deutsche Reichsbahn. In regular service, they were restricted to a maximum speed of 180 km/h, but the locomotives were designed for travel speeds of up to 225 km/h. At the time of their presentation, they were the most powerful single frame locomotives ever built.