(17) Walker in interview with Page, Leitch and Knightley, 1967.

(18) Hinsley, British Intelligence, vol. 1, pp. 57 – 8.

(19) ibid., p. 83.

(20) Wesley K. Wark, 'British Intelligence on the German Air Force and Aircraft Industry, 1933 – 1939', Historical Journal, vol. 25, no. 3(1982), p. 640.

(21) Wark, 'British Intelligence', pp. 636 – 8. Christie's informant is identified as Ritter in C Andrew and D. Dilks (eds). The Missing Dimension (London: Macmillan, 1984), p. 123.

(22) Barton Whaley, 'Covert Rearmament in Germany 1919 – 1939: Deception and Misperception', Journal of Strategic Studies, part 5 (March 1982), pp. 3 – 39.

(23) Hinsley, British Intelligence, vol. 1, pp. 49, 80.

(24) ibid., pp. 46, 76 – 7.

(1) Heinz Hohne, Canaris (London: Seeker & Warburg, 1979), p. 161.

(2) Gert Buchheit, Der Deutsche Geheimdienst. Geschichte der militarischen Abwehr (Munich: List, 1966), p. 175.

(3) Nigel West, M15. British Security Service Operations 1909 – 1945 (London: The Bodley Head, 1981), pp. 92 – 104.

(4) The de Rop – Winterbotham relationship is described by Winterbotham himself in Secret and Personal (London: Kimber, 1969).

(5) Ladislas Farago, The Game of the Foxes (London: Hodder & Stoughton, 1972), p. 86.

(6) David Kahn, Hitler's Spies (New York: Macmillan, 1978), p. 63.

(7) Farago, Foxes, p. 36.

(8) Thomas H. Etzold, 'The (F)utility Factor: German Information Gathering in the United States, 1933 – 1941', Military Affairs, vol. 39, no. 2 (1975), p. 78.

(9) ibid., p. 79.

(10) ibid.

(11) ibid.

(12) ibid., p. 80.

(13) Manfred Jonas, 'Prophet without Honour: Hans Heinrich Dieckhoffs Reports from Washington', Mid-America, vol. 47 (July 1965), pp. 222 – 33.

(14) Page, Leitch and Knightley, Philby, p. 46.

(15) ibid., p. 61.

(16) Philby, My Silent War, p. xix.

(1) R. J. Jeffreys-Jones, 'History on Trial: a Critique of the CIA and its Critics', p. 6. Paper delivered at the 9th Annual Meeting of the Society for Historians of American Foreign Relations, Catholic University of America, Washington DC, 4 – 6 August 1983.

(2) Andrew, 'Governments and Secret Services', p. 181.

(3) Farago, Foxes, dustjacket.

(4) Corey Ford, Donovan of OSS (Boston, Mass.: Little, Brown, 1970), p. 112.

(5) Oldfield in interview with author, 13 July 1979 .

(6) Malcolm Muggeridge. Chronicles of Wasted Time. II: The Infernal Grove (London: Collins, 1973), p. 149.

(7) Hinsley, British Intelligence, vol. 1, p. 91.

(8) Page, Leitch and Knightley, Philby, p. 121.

(9) 'The Profession of Intelligence', part 2, BBC Radio 4, 12 March 1980 .

(10) West, M16. p. 109.

(11) De Courcey in letter to author, 16 May 1981 .

(12) West, M16. p. 137.

(13) Interview with Peter Oilman, 23 March 1978 , unpublished.

(14) PRO, CAB/66/9/WP(40)244, 4 July 1940 , 'Imminence of a German Invasion of Great Britain '.

(15) JIC(40)376, 12 November 1940, quoted in Hinsley, British Intelligence, vol. 1, p. 295.

(16) Private letter to author, 7 September 1967 .

(17) West, M16, p. 109.

(18) Philby, My Silent War, p. 4.

(19) Hinsley, British Intelligence, vol. 1, p. 278.

(20) Michael Elliot-Bateman (ed.). The Fourth Dimension of Warfare, Vol. 1. Intelligence! Subversion! Resistance (Manchester: Manchester University Press, 1970), p. 53.

(21) David Stafford, Britain and European Resistance, 1940 – 1945 (London: Macmillan, 1980), p. 209.

(22) Kerby in interview with Page, Leitch and Knightley, 1967.

(23) M. R. D. Foot, 'Was SOE any Good?', in W. Laquer (ed.). The Second World War (London and Beverley Hills, Calif.: Sage 1982), p. 251.

(24) See Werner Rings, Life with the Enemy: Collaboration and Resistance in Hitler's Europe 1939 – 1945 (London: Weidenfeld & Nicolson, 1982) for examples.

(25) David Stafford, 'The Detonator Concept: British Strategy, SOE and European Resistance after the Fall of France', Journal of Contemporary History, vol. 10(1975), pp. 215 and 196 respectively.

(26) See, for example, R. Crossman and K. Martin, 100, 000, 000 Allies If We Choose. pamphlet, July 1940.

(27) Foot, 'Was SOE any Good?', p. 247.

(28) Anthony Verrier, Through the Looking Glass (London: Cape, 1983), p. 37.

(29) Bradley F. Smith, The Shadow Warriors: O.S.S. and the Origins of the C.I.A. (London and New York: Deutsch and Basic Books, 1983), p. 85.

(30) Milovan Djilas quoted in Stafford's book Britain and European Resistance, p. 210.

(31) Richard Usborne, quoted in Mark Wheeler, 'The SOE Phenomenon', in Laquer, Second World War, p. 195.

(32) Foot, 'Was SOE any Good?', p. 243.

(33) PRO, 32/1061 l/MA/08233, Home Defence Security Executive, 20 March 1941.

(34) Respectively: interview with Page, Leitch and Knightley, 1967; and quoted in Verrier, Looking Glass, p. 350.

(35) The Stockholm International Peace Research Institute has investigated the German story without any conclusive result.

(36) Jean Overton Fuller, The German Penetration of SOE (London: Kimber, 1975), pp. 175 – 6.

(37) William Stevenson, A Man Called Intrepid: the Secret War 1939 – 1945 (London: Macmillan, 1976), p. 457.

(38) Foot, 'Was SOE any Good?', pp. 248 – 9.

(39) Louis de Jong, 'The Great Game of Secret Agents', Encounter, January 1980, pp. 12 – 21; and West, M16, p. 180.

(40) Stafford, Britain and European Resistance, p. 137.

(41) ibid., p. 142.

(42) Bickham Sweet-Escott, Baker Street Irregular (London: Methuen, 1965), p. 75

(43) Basil Davidson, 'Scenes from the Anti-Nazi War', New Statesman, 4 JULY 1980 , p. 11.

(44) Private letter to Peter Calvocoressi.

(45) Stafford , Britain and European Resistance, p. 180.

(46) Verrier, Looking Glass, p. 24.

(1) There are many versions of these events. The best is to be found in Callum A. MacDonald, 'The Venio Affair', European Studies Review, vol. 8, no. 4 (October 1978), pp. 443 – 64.

(2) David Astor, 'Why the Revolt against Hitler was Ignored', Encounter, June 1969, p. 7.

(3) Telegram from D. G. Osborne (The Vatican) to London , 1 December 1939 , in 'Papst Pius XII, die britische Regierung und die deutsche Opposition in Winter 1939/40', Vierteljahreshefte fur Zeitgeschichte, vol. 22, no. 3 (1974).

(4) Astor, 'Revolt against Hitler', p. 8.

(5) MacDonald, 'Venio Affair', p. 445.

(6) West, M16, p. 71.

(7) MacDonald, 'Venio Affair', p. 448.

(8) Christie Papers, CHRS 1/27 – 8, Churchill College , Cambridge .

(9) W. Schellenberg, The Schellenberg Memoirs (London: Deutsch, 1956), p. 106.

(10) S. Payne Best, The Venio Incident (London: Hutchinson, 1950), p. 7.

(11) MacDonald, 'Venio Affair', p. 459.

(12) PRO, FO/371/C./7324/89/15, Churchill directive, 28 June 1940 .

(13) C. Simpson and P. Knightley, 'The Secret List of Rudolph Hess', Sunday Times, 7 November 1982 .

(14) Churchill's secretary. Sir John Colville, in interview with Colin Simpson and author, November 1982.

(15) Hinsley, British Intelligence, vol. 1, p. 100.

(16) West, M16, p. 112.

(17) ibid., pp. 186 – 7.

(18) ibid., p. 110.

(19) ibid., pp. 152 – 3.

(20) Hinsley, British Intelligence, vol. 1, p. 367.

(21) West, M16, pp. 84, 225.

(22) ibid., p. 44.

(23) ibid., pp. 50 – 2, 74.

(24) Louis de Jong, 'Britain and Dutch Resistance, 1940^ 1945', p. 21. Notifies voor het Geschied werk, no. 109 (undated), Netherlands State Institute for War Documentation.

(25) See Hans L. Trefousse, 'The Failure of German Intelligence in the United States, 1939 – 1945', Mississippi Valley Historical Review, vol. 42, no. 1 (June 1955).