Lady Diana Mosley

Lady Diana Mosley

Document reference: KV 2/1363-1364

Lady Diana Mosley (1910-2003) was one of the daughters of Lord Redesdale, and had the reputation of being the most beautiful and dazzling of the 'Mitford girls'. She married the heir to the Guinness company, Brian (later Lord Moyne), at the age of 18, but subsequently left him and then married the British fascist, Oswald Mosley. She was introduced to Hitler by her sister, Unity, and maintained a life-long admiration for him and his political beliefs.

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KV 2/1363 commences with the Security Service taking an interest in Diana Guinness (as she then was) when her association with Oswald Mosley first came to its attention in 1934. The file includes reports of her frequent movements to and from Germany by air, a report of her secret marriage to Mosley in the presence of Hitler and Ribbentrop in 1936, and various pieces of intercepted mail and phone conversations. Her baggage was inspected at Heston Airport in August 1938 on her return from a visit to Germany, and the suspicious contents (including a new autographed photo of Hitler) were reported to the Service. Diana Mosley was not interned on the outbreak of war, and remained at liberty for some time. There is a Home Office letter of May 1940 explaining the Home Secretary's decision not to intern her at that time, and then correspondence from her former father-in-law, Lord Moyne, which seems to have resulted in her detention the following month. A copy of the form requesting her detention is on the file. She was interned in Holloway prison, and there are reports of her visitors there, and also a transcript of her appeal hearing against her detention.

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KV 2/1364 continues the story, with further reports of Diana Mosley's visitors at Holloway from 1941 until her release from detention in 1943. The Home Office warrant on her was eventually suspended in December 1946. After this, the Security Service decided that there was no further justification for maintaining a separate file on Diana Mosley, and later correspondence relating to her can be found on the joint files with her husband already released (KV 2/884-897). Both files contain reported comments and correspondence from members of Diana Mosley's family.