LNER J6 Class

The LNER J6 Class was the LNER classification for the Great Northern Railway Class J13 0-6-0 inside-cylinder goods tender locomotives designed by Henry Ivatt and introduced at Doncaster Works from 1911, which became one of the GNR's most numerous goods engine classes and passed to the LNER at the 1923 Grouping as the LNER's standard light-to-medium goods 0-6-0 on the former-GNR routes in the East Midlands and Yorkshire. With 110 examples built between 1911 and 1922, the J6 was one of the LNER's more numerous inherited goods types.

Ivatt designed the J6 as a superheated development of his earlier GNR goods types, providing a reliable and economical general-purpose goods engine suited to the mixed goods and agricultural traffic of the GNR's routes through Lincolnshire, the East Midlands, and Yorkshire. The inside-cylinder layout gave accessibility for maintenance at the secondary depots of the GNR network, and the superheated boiler gave improved efficiency over the saturated types that had preceded it.

Under the LNER the J6s continued on former-GNR secondary goods duties, and under BR they worked the same routes until displacement by diesel traction in the late 1950s and early 1960s. None was preserved, though the J6 is sometimes overshadowed by the more celebrated GNR and LNER locomotive types associated with the East Coast Main Line express tradition.