Rupert Mitford, Baron Redesdale, took his seat in the House of Lords in 1991 and later became a Liberal Democrat peer, serving as Energy Spokesman before resigning the party whip in 2025 to sit as a non-affiliated member. Born in 1967 into the Mitford family and educated at Newcastle University, he succeeded his father as 6th Baron Redesdale and was subsequently made a life peer after the reform of hereditary peers in 1999. He has also worked in the energy sector, founding and leading organisations focused on carbon and energy management.