BR Standard Class 2

The BR Standard Class 2 2-6-0 was a series of sixty-five lightweight mixed-traffic Mogul locomotives designed by Robert Riddles and his team at British Railways and built at Darlington Works between 1952 and 1956, representing the smallest of the BR Standard tender locomotive classes and intended for lightly-laid secondary and branch lines where the heavier Standard types were restricted by axle loading. With a maximum axle load of just 14 tons, the Class 2 Mogul could access routes barred to virtually every other BR tender locomotive, making it valuable on the lightly-engineered rural lines of Wales, the West Country, and the Scottish Borders that formed an important part of BR's early post-nationalisation network.

Riddles based the Class 2 design on the LMS Ivatt Class 2 2-6-0 that had already demonstrated the formula: a lightweight, free-steaming Mogul with outside cylinders, a taper boiler, and modest power output well matched to the light passenger and goods traffic of secondary and branch routes. The BR Standard version incorporated the detail improvements that Riddles was applying across the Standard fleet — rocking grates, self-cleaning smokeboxes, self-emptying ashpans — to reduce maintenance demands on depots with limited facilities.

The Class 2 Moguls worked secondary and branch duties across the Western, Southern, Scottish, and Eastern Regions. Their light footprint opened routes including the Cambrian lines in mid-Wales, the Brecon and Merthyr section, and various Scottish branch workings. Several examples were also built as the closely related Class 2 2-6-2T tank version for branch passenger work. Withdrawals came rapidly in the early 1960s as the Beeching closures eliminated many of the rural branches the class was built to serve. One example, 78022, is preserved at the Keighley and Worth Valley Railway.