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Railway Company – Post 1923 Grouping

GWR – Great Western Railway

SR – Southern Railway

LMS – London Midland & Scottish

LNER – London North Eastern Railway

BR – British Railways locomotive designs post 1948

 

Earlier Locomotives that not taken into the main companies at Grouping in 1923

 

The First Generation of Steam Locomotives

 

GWR Narrow Gauge

 

Broad Gauge