LNER B3 Class

The LNER B3 Class was the LNER classification for the Great Central Railway Class 9P express passenger 4-6-0 locomotives designed by John G. Robinson and introduced in 1917 — a series of large-boilered four-cylinder 4-6-0 express locomotives that were the most powerful express engines ever to work on the Great Central Railway. The B3 entry in this database provides the LNER classification context for what was primarily a GCR design; full details of the class are given in the GCR Class 9P / LNER B3 entry.

Under the LNER the former-GCR 9P Class locomotives were reclassified as B3, reflecting the LNER's systematic reclassification of all inherited locomotive types. The B3 designation covers six locomotives named after Lords of the Realm (Lord Faringdon, Earl Haig, and others), representing Robinson's final and most ambitious express design for the GCR's London Marylebone–Manchester express services via the Woodhead route and the GCR main line.

See the main GCR Class 9P / LNER B3 entry for the full design history, technical specification, service record, and preservation status.