Constance Mary Hart, Baroness Hart of South Lanark, (née Ridehalgh; 18 September 19247 December 1991), also known as Dame Judith Hart, was a British Labour Party politician. She served as a Member of Parliament for 28 years, from 1959 to 1987. She served as a government minister during the 1960s and 1970s before entering the House of Lords in 1988.
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