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Diane Julie Abbott (born 27 September 1953) is a British politician who has served as a Member of Parliament (MP) for Hackney North and Stoke Newington since 1987. She was the first black woman elected to the UK Parliament, and in 2024 became its longest-serving female MP, earning the title Mother of the House. A former Shadow Home Secretary and Privy Counsellor, Abbott has been a prominent figure on the Labour left and a vocal campaigner on issues of race and inequality.

She was suspended from the Labour Party in 2023 over comments about racism, later apologised, and had the whip restored ahead of the 2024 general election. In July 2025, she was suspended again after reiterating those remarks in a BBC interview, and sat as an independent MP until July 2026, when the whip was restored following the ascension of Andy Burnham as Labour leader.