Though many apply, only a few have the skills and patience to make it as a “watcher”, an MI5 training manual published for the first time by the National Archives reveals. Despite the rise in ...

MI5’s top interrogator was baffled by Kim Philby ... Philby, who was then a high-ranking MI6 officer, first came under suspicion in 1951 when two fellow Cambridge spies, Donald Maclean and ...

Confessions of double agents and tips for new spies have been released as part of a tranche of recently-declassified documents from MI5. The documents ... friend and fellow MI6 officer Nicholas ...

Historian Christopher Andrew says in the official history of MI5 that the queen had previously ... continued to work for foreign intelligence agency MI6 despite falling under suspicion.

these were some of the tips given to rookie MI5 "watchers". Their job was to covertly tail and report on suspected enemy agents. The guidance is contained in a booklet that was issued to all new ...

The tranche of documents, which are not covered by Freedom of Information laws and released at MI5's discretion subject to redactions, also reveal Philby confessing to MI6 officer and friend ...

Newly released MI5 files reveal that, for nearly 10 years, the late monarch didn’t know that royal household member Anthony Blunt was actually a Soviet double agent. According to the BBC ...