The British politician known for her role during the Suez Crisis is Anthony Eden, who served as Prime Minister from 1955 to 1957. The crisis in 1956 was marked by Egypt's nationalization of the Suez Canal, leading to military intervention by Britain, France, and Israel. Eden's decision to engage in military action faced significant backlash, both politically and publicly, contributing to his eventual resignation. His legacy is often defined by this controversial episode, revealing the challenges of post-war British imperialism and the shift in global power dynamics.