This article lists all peerages held by prime ministers of the United Kingdom, whether created or inherited before or after their premiership.
Extant titles are in bold.
Granted as part of the 1983 Dissolution Honours Granted as part of the 1987 Dissolution Honours Granted as part of the 1992 Dissolution Honours Granted for his tenure as Foreign Secretary Granted as part of the 2024 Dissolution Honours Irish and Scottish Peers did not have an automatic seat in the House of Lords unlike their English and British counterparts, until the Peerage Act 1963 which granted all Scottish Peers (those without Imperial status) to have an automatic seat in the House of Lords until the passing of the House of Lords Act 1999, and Peers to disclaim their own peerage for the rest of their life, which Alec Douglas-Home did on the 23 October 1963.
Lord Palmerston never sat in the House of Lords as he was a holder of an Irish peerage, but sat as a member of Parliament for Tiverton during his two spells as prime minister.