[1][2] In Plymouth, Simpson became active in the Liberal Party, and in 1898 she was the only woman to win election to the town's Board of Guardians.
[1][2] Simpson was a founder member of the Plymouth branch of the National Union of Women’s Suffrage Societies, in 1909.
[2] In 1921, the Simpsons moved to Edmonton, near London, although Louie remained a magistrate in Plymouth and visited the town regularly.
The Times noted that her main policy was for international peace, and she worked hard to win the votes of Liberal Party supporters, addressing 17 meetings in just one day.
[3] Simpson was later elected to the Edmonton Board of Guardians, also serving on the Middlesex Education Committee and the Enfield Labour Exchange.