The LNER Class A4 earned its place in history as the fastest steam locomotive ever built, with its sleek, aerodynamic design and record-setting run in 1938. In this video, we explore its engineering, ...

The coal was hot. The crew were ready. On July 3rd, 1938, the 4468 Mallard, an A4-class steam locomotive, was performing an alleged brake test for its London and North Eastern Railway (LNER) owners.