This book investigates the vast array of fighter jet projects conceived by British companies from 1950 onwards, many of which never progressed beyond the drawing board. It draws upon extensive, recently declassified primary-source material to reveal a hidden world of aerospace development, detailing the tender design competitions and the decisions that led to cancellations or production. The author provides a comprehensive overview of fighter evolution in Britain, highlighting specific examples such as the Hawker P.1103/P.1136/P.1121 series and the Fairey "Delta III". The work is richly illustrated with contemporary images and specially commissioned artwork of these unbuilt aircraft.

This book is regarded as a comprehensive and well-researched account of Britain's unfulfilled fighter jet designs. Its strength lies in its extensive use of primary-source material, much of which is newly declassified, offering an insider's view into a secretive aspect of aerospace history. The detailed focus on design competitions and the reasons behind project cancellations or successes provides valuable historical context. Readers and historians alike appreciate the depth of information and the visual aids, including commissioned artwork, that bring these 'might-have-been' aircraft to life.