Sir John Fowler Leece Brunner was a Liberal Party politician. He was the eldest son of industrialist Sir John Tomlinson Brunner. He was elected at the 1906 general election as Member of Parliament (MP) for Leigh in Lancashire, serving on the Liberal benches with his father, the Liberal MP for Northwich in Cheshire. When his father retited from Parliament at the January 1910 election, he was elected to succeed him as MP for Northwich, and held the seat until his defeat at the 1918 general election.

He unsuccessfully contested the Southport seat at the 1922 general election, and won it at the 1923 general election, but was defeated again at the 1924 general election. He stood again at the Cheltenham by-election, 1928, but came a poor second in the Conservative safe seat. On his