March is a small market town in the fens, about thirty miles from Cambridge. The arrival of the railways transformed March and reached their peak during the Second World War, when March could lay claim to having the largest and most modern marshalling yard in Europe. With such a busy yard locomotive maintenance was a necessity, and March boasted two steam sheds at its height. This book concentrates on the diesel depot constructed to maintain the new locomotives introduced under the 1955 modernisation plan. It stood from 1963 to 1996 and has not received the recognition it deserves in the history of the railway at March. This book goes some way to filling that gap.