The London and North Eastern Railway (LNER) Thompson Class Q1 was a class of 0-8-0T steam locomotives.
Thirteen were rebuilt between 1942 and 1945 at Gorton Works.
There were two variants: The extra 500 imperial gallons (2,300 L; 600 US gal) of water in the Q1/2 was carried in the rear tank, under the coal bunker, resulting in a reduced coal capacity.
All the Class Q1 locomotives were withdrawn and scrapped from 1954 to 1959.
This article relating to steam locomotives operated in the United Kingdom is a stub.