The Lancashire and Yorkshire Railway Class 5 were 2-4-2T steam locomotives designed by Chief Mechanical Engineer (CME) John Aspinall and introduced from 1889 for local passenger work.

Later batches included progressive modifications such as extended coal bunkers and belpaire fireboxes. The final batch built from 1911 to 1914 under George Hughes incorporating superheated boilers and belpaire firebox gave increased tractive effort, others were also rebuilt to this standard. When Hughes introduced his classification system in 1919 the more powerful superheated locomotives were designated Class 6.

The final examples were withdrawn in 1961. A single preserved example exists. The lead locomotive No. 1008 of 1889 which was withdrawn in 1954 is now preserved as a part of the national collection. This locomotive is the small-bunkered version with the round topped boiler.