This is the only title to have ever been published that lists every diesel, electric, and gas-turbine locomotive to have operated over the main line network of Britain's Rail system, including prenationalization, British Railways, and privatized operators. Now taking up over 350 landscape pages, this book allocates one line to every locomotive and provides all numbers carried, builder details, works numbers, dates delivered, depots of original allocation, date withdrawn from service, depot of final allocation, full disposal details including if reused, broken up, or converted. Dates for disposals are also given. For locomotives exported, full details of their overseas service is given. Each class is covered in a separate section, including technical details with text covering the history of the class and its operations. Each class entry is complemented by illustrations. This is a must-have title for anyone interested in modern traction and contains the largest amount of class details ever made available in one publication.