The London, Tilbury and Southend Railway (LTSR) 79 Class is a class of 4-4-2T suburban tank engines. They were designed by Thomas Whitelegg, as a development of the earlier 37 Class. They could reach a top speed of 65 mph.

Nasmyth, Gaskell and Company, originally called The Bridgewater Foundry, specialised in the production of heavy machine tools and locomotives. It was located in Patricroft, in Salford England, close to the Liverpool and Manchester Railway, the Bridgewater Canal and the Manchester Ship Canal. The company was founded in 1836 and dissolved in 1940.