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Duration 16:14

Security Service file release April 2011

Professor Christopher Andrew introduces the 26th Security Service records release, which contains 180 files, bringing the total number of Security Service records at The National Archives to more than 4,725. As with previous releases, around three quarters of the records are personal files relating to individuals (KV 2), with the remainder a combination of subject files (KV 3), policy files (KV 4), organisation files (KV 5) and list files (KV 6). The records cover a range of subjects and span the inter-war, Second World War and post-war eras.