The Liverpool and Manchester Railway (LMR) 57 Lion is an early 0-4-2 steam locomotive, which had a top speed of 40 mph (64 km/h) and could pull up to 200 tons (203 tonnes).

[2] One of a pair designed for hauling freight (the other, number 58, was called Tiger), Lion was built by Todd, Kitson & Laird of Leeds in 1838.

It was "rediscovered" in 1923 and then rescued by members of the Liverpool Engineering Society in 1928 when it was replaced by an electric pump, and then renovated by Crewe Works.

Following restoration, Lion took part in the Liverpool and Manchester Railway Centenary exhibition during September 1930 in Wavertree Playground, where it ran round a circular track pulling specially-constructed replica carriages which are now preserved in the National Railway Museum.

It was then reactivated to appear in the film Victoria the Great at Denham Studios and participate in a publicity stunt on the line between Llandudno Junction and Colwyn Bay, where it ran at slow speed side-by-side with ex-LNWR George the Fifth Class No.

In early 1951, the locomotive was removed from storage and reconditioned to appear in the film The Lady with a Lamp, which retold the story of Florence Nightingale.

The locomotive was accidentally jolted in the scene where its separated inspection train did not slow down sufficiently when pushed by a banking engine and it forced the tender to strike the footplate, the damage of which is still visible today.

[8] In 1979–1980 it was removed from display again to be restored by Rustons Diesels Ltd. for the Liverpool and Manchester Railway 150th Anniversary Celebrations.

Lion last operated at the Birmingham Railway Museum at Tyseley on an open day in 1988 before returning to static display status permanently.