BR Standard Class 7
Class of 55 two-cylinder 4-6-2 locomotives
BR Standard Class 7
The BR Standard Class 7, otherwise known as the Britannia Class, is a class of 4-6-2 "Pacific" type steam locomotive designed under Robert Riddles for use by British Railways for mixed-traffic duties. 55 were constructed between 1951 and 1954. The design employed results from the 1948 locomotive exchange trials undertaken in advance of further locomotive classes being constructed. Three batches were constructed at Crewe Works, before the publication of the 1955 Modernisation Plan. The Britannia Class design was based on best practice from the pre-nationalisation railway companies in terms of operating efficiency and lower maintenance costs; various weight-saving measures also increased the route availability of a Pacific-type locomotive on the British Railways network. The Britannias received a positive reception from their crews, with those regularly operating the locomotives giving them favourable reports as regards performance. However, operation in some areas of the British Railway...
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