How I came to write The Hut Six Story

Gordon Welchman was a Cambridge mathematician and one of the key figures working at Bletchley Park (BP) during World War Two. In 1974, he decided to write his own memoir following the publication of other books on the subject. His book ‘The Hut Six Story’ was published in both the US and UK in early 1982 and was the first to include technical details about the BP operation. Pressure on his publishers from the NSA and GCHQ ultimately resulted in the book being withdrawn from their lists. On 14 May 1982, he wrote this previously unpublished paper, explaining his motives.