(Service Archives)
29Â Â Folkert van Koutrik, c . 1940 (Service Archives)
30Â Â Anthony Blunt in military uniform, 1940 (Service Archives)
31Â Â Surveillance photograph of John Gollan, 1942 (Service Archives)
32Â Â Camp 020 (Imperial War Museum HU66759)
33Â Â Robin âTin-eyeâ Stephens (Service Archives)
34Â Â J. C. Masterman (Service Archives)
35Â Â Thomas Argyll âTarâ Robertson (Service Archives)
36  Juan Pujol (GARBO) with MBE, 1984 (© Solo Syndication/Associated Newspapers Ltd)
37  Tomás âTommyâ Harris (Service Archives)
38Â Â Mary Sherer (Service Archives)
39Â Â Nathalie âLilyâ Sergueiev (TREASURE) with her Abwehr case officer, Major Emil Kliemann, Lisbon, March 1944 (TNA KV 2/466)
40Â Â Nathalie âLilyâ Sergueievâs dog, Babs (TNA KV 2/466)
41Â Â Guy Liddell with his brother, David Liddell (Service Archives)
42Â Â Victor Rothschild, c . 1940 (Service Archives)
43Â Â German bomb hidden in a crate of onions, February 1944 (KV 4/23)
44Â Â Klaus Fuchs (Service Archives)
45Â Â âJimâ Skardon and Henry Arnold (Service Archives)
46Â Â Sir John Shaw (Copyright unknown, courtesy of Harry S. Truman Library)
47Â Â Aden, 1963 (Former member of staff, private collection)
48Â Â Roger Hollis (Service Archives)
49Â Â Jomo Kenyatta at Lancaster House, 1963 (PA/PA Archive/Press Association Images)
50Â Â Gordon Lonsdale (Service Archives)
51Â Â Harry Houghton and Ethel Gee, 1960 (Service Archives)
52Â Â Charles Elwell, 1960 (Service Archives)
53Â Â Evgeni Ivanov, 1961 (Service Archives)
54  The Soviet service attachésâ address written in lipstick (Service Archives)
55Â Â Evgeni Ivanov sketched by Stephen Ward (Camera Press, London)
56Â Â Milicent Bagot with CBE, 1967 (family archives)
57Â Â Bert Ramelson and Lawrence Daly, 1969 (Service Archives)
58Â Â Betty Reid, 1972 (Service Archives)
59Â Â An MI5 observation post, c . 1970 (Service Archives)
60Â Â Oleg Lyalin, 1971 (Service Archives)
61  Soviet intelligence officers leaving the UK after Operation FOOT, 1971 (© Mirrorpix)
62Â Â Registry staff carrying out âlook-upsâ in the card index, c . 1970 (Service Archives)
63Â Â Patrick Walker and Stephen Lander, 1984 (former member of staff, private collection)
64Â Â Cricket score card, 23 June 1984 (Service Archives)
65Â Â Oleg Gordievsky, 1982 (Service Archives)
66  Mr and Mrs Arkadi Guk (© Solo Syndication/Associated Newspapers Ltd)
67  Václav JelÃnek, Czech illegal known as Erwin Van Haarlem, 1988 (Service Archives)
68  Van Haarlemâs kitchen at the time of his arrest, 2 April 1988 (© Metropolitan Police Authority 2009)
69  PIRA mortar attack on Downing Street, February 1991 (© Metropolitan Police Authority 2009)
70Â Â Donal Gannon and Gerard Hanratty, Operation AIRLINES, 1996 (Service Archives)
71Â Â Siobhan OâHanlon, Gibraltar, February 1988 (Service Archives)
72Â Â Ceremonial Guard, Gibraltar (Service Archives)
73Â Â Moinul Abedin, Operation LARGE, 2000 (Service Archives)
74Â Â Omar Khyam and Mohammed Momin Khawaja, Operation CREVICE, 2004 (Service Archives)
75  Dhiren Barot, Operation RHYME, 2004 (© Metropolitan Police Authority 2009)
76Â Â Muktah Said Ibrahim and Ramzi Mohammed, Operation HAT, July 2005 (Solo Syndication/Associated Newspaper Ltd)
77  Yassin Hassan Omar, Operation HAT, July 2005 (© Metropolitan Police Authority)
78  Ramzi Mohammed and Yassin Omar at a training camp, Cumbria, 2004 (© Metropolitan Police Authority 2009)
79  Bilal Abdulla purchasing a gas canister, 2007 (© Metropolitan Police Authority 2009)
80  Gas canister in failed bomb attack, London, 2007 (© Metropolitan Police Authority 2009)
81Â Â Operational