Michael Gove - Held several cabinet roles under four prime ministers, including education, housing and justice. Now editor of the Spectator magazine.
Mark Harper - Former transport secretary and an ex-Tory chief whip.
Simon Hart - Served as Rishi Sunak's chief whip, and was previously Boris Johnson's Wales secretary.
Sir Alister William Jack - Served as Scotland secretary under three prime ministers.
Stephen Massey - Held the role of chief executive officer of the Conservative Party during Sunak's leadership.
Victoria Prentis - Served as attorney general and held other junior ministerial posts.
Eleanor Shawcross - Conservative adviser who ran Sunak's No 10 Policy Unit.