This beautifully illustrated, information-packed book, written by an energy expert, allows you to look under the hood of the most modern diesel-electric locomotives through an energy and environment lens.

This informative, illustrated guide to the British Railways locomotive series covers its full production lifespan, from 1962–1965. In the early 1960s, the Bo-Bo diesel-electric locomotive known as The Clayton was conceived as the new standard for British Railways, superseding other Type 1 classes. While the early classes suffered from poor driver visibility, the Claytons were highly successful and popular with operating crews. However, the largely untested high-speed, flat Paxman engines proved to be highly problematic. As a result, the Claytons were eventually withdrawn from BR service by December 1971. Anthony Sayer draws on considerable amounts of archive material to tell the full story of these ‘Standard Type 1’ locomotives and the issues surrounding their rise and fall. Further sources provide insights into the effort and money expended on the Claytons in a desperate attempt to improve their reliability. Supported by over 280 photographs and diagrams, dramatic new insights into this troubled class have been assembled for both historians and modelers alike.

The British Railways ‘Pilot Scheme’ orders of 1955 included ten BTH and ten NBL Type 1 locomotives, these being introduced during 1957-61 for use in East London, and on the Great Eastern and London, Tilbury & Southend lines. The BTH fleet subsequently expanded to forty-four, as a consequence of their light axle-loading and the availability of spare manufacturing capacity which BR chose to exploit in their quest to eliminate steam traction. Further construction of these two classes ceased after the fifty-four units, with preference being given to the highly reliable English Electric product which by mid-1962 had proliferated to 128 examples. The NBL fleet survived until 1968, being withdrawn after ten years of indifferent performance. The BTH locomotives followed by 1971, although four lingered on as carriage pre-heating units. Dramatic reductions in goods traffic during the 1960s/70s particularly impacted local trip and transfer freight duties, the ‘bread and butter’ work for the Type 1s, and it was inevitable that the less successful classes were retired from traffic first. This book looks at the short history of these two classes, making extensive use of archive sources, combined with the primary observations of numerous enthusiasts. Previously unpublished information, covering the introduction, appearance design and performance issues of the locomotives, form a central focus, and, allocations, works histories, storage and disposals, liveries and detail differences are covered in the same level of detail as previous volumes in the ‘Locomotive Portfolio” series.