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Margaret Mabel Gladys Jennings (née Allan; 26 July 1909 – 21 September 1998) was a Scottish motor racing driver.
Margaret Allan was born in Patterton, Renfrewshire, in July 1909. She was the daughter of James Allan, a member of the wealthy Scottish-Canadian family who owned the Allan Line steamship company.
As Margaret Allan (sometimes erroneously "Allen") she was one of the leading British female racing and rally drivers in the inter-war years, and one of only four women ever to earn a 120 mph badge at the Brooklands circuit.
1937 she married Christopher Jennings, later editor of The Motor, and retired from racing. They had one son.
WWII Jennings worked as an ambulance driver and then at Bletchley Park's intelligence de-coding centre,
Post-WWII She became a journalist and was Vogue magazine's motoring correspondent from 1948 to 1957