GNR Class H4

The Great Northern Railway (UK) built this class later to pass into the LNER and become the Class K3
==History==
The first ten locomotives were built at the GNR's Doncaster Works in 1920, to the design of Nigel Gresley. Six further batches were built at Doncaster and Darlington Works, Armstrong Whitworth, Robert Stephenson and Company and the North British Locomotive Company. The last examples were delivered in 1937, with a total of 193 locomotives having been built. The type was a more powerful development of the earlier H3 (LNER K2) class and was notable at the time, as the 6-foot-diameter (1.8 m) boilers were the largest fitted to any British locomotive to that date. After formation of the London and North Eastern Railway, the type became known as class K3 and was adopted as an LNER standard design. All were withdrawn between 1959 and 1962 (the K5 going in 1960). None survived into preservation.
==Locomotives==
==Gallery==
Category:Locomotive Classes
Category:GNR (UK) Classes
Category:LNER Classes
Category:Steam Classes