LNER Class A4 4468 Mallard
London and North Eastern Railway locomotive numbered 4468 "Mallard" is a Class A4 4-6-2 Pacific steam locomotive built at Doncaster Works, England in 1938. It is historically significant as the holder of the world speed record for steam locomotives at .
LNER Class A3 4472 Flying Scotsman
While the Great Western Railway locomotive "City of Truro" had previously been unofficially timed at running in excess of , 4472 became the first steam locomotive to be officially authenticated at this speed on 30 November 1934, driven by Bill Sparshatt and running a light test train. It earned a place in the land speed record for railed vehicles; the publicity-conscious LNER made much of the fact.