Peter Leonard Brooke, Baron Brooke of Sutton Mandeville, was a British politician. A member of the Conservative Party, he served in the Cabinet under prime ministers Margaret Thatcher and John Major, and was a member of Parliament (MP) representing the Cities of London and Westminster from 1977 to 2001.

The Chairman of the Conservative Party in the United Kingdom is responsible for party administration and overseeing the Conservative Campaign Headquarters, formerly Conservative Central Office.