W. G. Bagnall

W. G. Bagnall was a locomotive manufacturer from Stafford, England. It was founded in 1875 by William Gordon Bagnall and ceased trading in 1962 when it was taken over by English Electric Co Ltd. The company was located at the Castle Engine Works, in Castle Town, Stafford. The majority of their products were small four- and six-coupled steam locomotives for industrial use, and many were narrow gauge. They were noted for building steam and diesel locomotives in standard and narrow gauges.

Bagnalls introduced several novel type of locomotive valve gear including the Bagnall-Price and the Baguley. They also used marine (circular) fireboxes on narrow gauge engines, a design that was cheap but needed a different firing technique.

Some of Kerr Stuart's designs were brought to Bagnalls when they employed Kerr Stuart's chief Draughtsman. Examples of such locomotives can be seen on the Sittingbourne & Kemsley Light Railway.