British technical intelligence and the Soviet intermediate range ballistic missile threat, 1952–60

This article looks at the shifting intricacies of British assessments of the Soviet IRBM threat to the United Kingdom during the 1950s. Based on JIC, Cabinet and Air Ministry records of the period, as well as political memoirs, it looks at the assessments in parallel with the development of the British Blue Streak nuclear ballistic missile programme. This land‐based weapon was eventually cancelled in April 1960 on strategic not cost grounds, too early in this author's opinion.