Since its creation in 1974, Brentwood has been a mostly
Conservative-controlled council. The party held control until
1990, with the
Liberal Democrats taking the council from
no overall control in
1991. They controlled the council until
2003, with the Conservatives re-taking control in
2004. The Conservatives held a majority on the council until the
most recent election, where the council again fell into no overall control. In that election, the Liberal Democrats gained 3 seats with 43.7% of the vote, the Conservatives lost 3 with 37.5%, and
Labour remained at 2 seats with 14.3%. ==Boundary changes==