Browne-Evans was educated at King's College London and became Bermuda's first female barrister in 1953 after being called to the bar at Middle Temple in June 1953. She was the first black woman to be elected to the House of Assembly of Bermuda, defeating the long-serving incumbent Sir Bayard Dill, becoming the Member of Parliament (MP) for the Devonshire North constituency in 1963. Five years later she became the leader of the PLP, gaining worldwide recognition as the first female Leader of the Opposition in the British Commonwealth. In 1972 she stepped down as leader but took on the role of Jamaica's Honorary Consul in Bermuda, the first Bermudian to serve in that capacity. From 1976 to 1985 she again led the PLP in opposition.