Misdefending the realm how MI5's incompetence enabled Communist subversion of Britain's institutions during the Nazi-Soviet pact Mi5defending the realm Percy, Antony creator author. text bibliography biography History. enk 2017 monographic eng print x, 363 pages, 8 unnumbered pages of plates : illustrations ; 24 cm by Antony Percy. Includes bibliographical references (pages 321-335) and index. e-uk--- Great Britain. MI5 History 20th century Berlin, Isaiah 1909-1997 Burgess, Guy 1911-1963 Berlin, Isaiah 1909-1997 Burgess, Guy 1911-1963 Great Britain. MI5. Spies Great Britain History 20th century Spies Great Britain 1900-1999 fast DA587 .P47 2017 941.084 1908684968 9781908684967 2017479799 YDX 170616 20180713131146.0 in00003999253 eng