Mary Hayley Bell, Lady Mills (22 January 1911 – 1 December 2005) was an English actress and writer, married for 64 years to actor Sir John Mills. Her novel Whistle Down the Wind was adapted as a film, starring her teenaged daughter, actress Hayley Mills.
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Background
Mary Hayley Bell was born in Shanghai International Settlement, Shanghai, China, where her father, Colonel Francis Hayley Bell, served in the Chinese Maritime Customs Service with postings to various Treaty Ports. Her mother was Agnes (née McGowan). Her father, a Boer War veteran, served, from 1925 to 1928, as Customs Commissioner for Kowloon (within Hong Kong, although this position had no connection with the British colonial administration). During this period Mary attended school in Hong Kong and frequently spent weekends of leisure at the Commissioner's official country bungalow near Fan Ling Golf Club. The family later (1930) moved to Tianjin (then known as Tientsin). In the run-up to World War II, Francis Bell was the Defence Security Officer in Singapore in 1936 MI5. He staged a mock commando raid on Singapore's vital installations, including the naval base, where his men took control of a fuel dump, fleet of boats, and telephone exchange switchboards, in order to highlight Singapore's vulnerability to attack. This led to furious reactions from senior officials, with complaints being made to the War Office, and Bell was sacked.



