British intelligence could barely cope with the number of Soviet spies in the UK during the Cold War, according to an official history of MI5.
The book found that MI5 did not get to grips with Soviet espionage in Britain until the early 1970s.
The history was written by Professor Christopher Andrew, who insisted he was given complete access to MI5's files.
Read more
Showcase your ideas, writing, and personal site to readers.
Make a secure online donation to