A comprehensive companion volume to Hugh Longworth's 'British Railways Steam Locomotives 1948-1968', this latest title provides a locomotive-by-locomotive allocation record from 1948 to1963. The follow up to one of the most successful of reference books produced by Ian Allan Publishing's OPC imprint in recent years, this book provides a class-by-class, locomotive-by-locomotive record of each steam locomotive that was in service on 1 January 1948 as well as all those that were built between that date and 1963. Following years of continued research, this title is fully updated with any extra information found since the original book. Drawing upon six vital years in the steam era - 1948, 1951, 1954, 1957, 1960 and 1963, the book provides a locomotive-by-locomotive allocation record, as well as including distribution maps to illustrate how each individual class was allocated during the relevant years and a shed-by-shed listing for each of these years. Although the book is primarily designed as a work of reference with detailed tabular matter, there will also be a range of illustrations portraying typical examples of the locomotive classes featured.