"Spycatcher" by Peter Wright is quite interesting, as well as very controversial. He was an Assistant Director at MI5 during the Cold War, and the book is something of a 'tell-all account'. A major focus of the book is his work in trying to deduce the identity of the mole in the organization, which he believed was Roger Hollis, the Director General of MI5, although he never was successful in unmasking him (and Hollis was dead when the book was published in 1987). Half of the books fame, though, comes from the fact that the government attempted to prevent its publication, leading to a fight in the court system, which of course just increased its profile, serving as a selling point outside of England, and making people more interested in reading it once publication was allowed inside.

"Between Silk and Cyanide, A Codemakers War, 1941-1945". Was written by Leo Marks, who left his father's famous bookshop at 84 Charing Cross Road at the age of 22 to fight WWII. He was quickly recognized as a genius cryptographer, and became Head of Communications for the Special Operations Executive (SOE) which sent operatives into occupied Europe.

After the war, Marks became a well known writer of screenplays. His vivid and polished authorial style makes this a standout war autobiography, and his career as an incredibly young top cryptographer, training some of the most famous agents dropped into occupied Europe makes this one of the best books written about the espionage war.