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Auntie Christine in Leeds was, in reality, part of a new branch of British intelligence dedicated to aiding POWs and servicemen shot down or lost in enemy territory. It operated under various cover names, including The Lisbon Book Fund, The Welsh Provident Society, The Licensed Victuallers Sports Association, The British Local Ladies’ Comforts Society, and The Jigsaw Puzzle Club. But its official name was MI9, the youngest addition to the Military Intelligence family that already included MI5 and MI6.
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Ben Macintyre (Prisoners of the Castle: An Epic Story of Survival and Escape from Colditz, the Nazis' Fortress Prison)