The Lord-Lieutenant of Greater London is the personal representative of the monarch, currently King Charles III, in Greater London. Each Lord-Lieutenant is assisted in, largely ceremonial, duties by Deputy Lieutenants whom he appoints; the Lieutenancy Office is based at Whitehall, London SW1. The Lord-Lieutenant is also assisted by a Lord-Lieutenant's Cadet, one from each branch of the main cadet forces, Army Cadet Force, Air Training Corps and Sea Cadet Corps. The cadet is selected by the Lord-Lieutenant. The Lord-Lieutenant's Cadet's are from the county of the Lord-Lieutenant. Created under the Administration of Justice Act (1964), this office merged those of Lord-Lieutenant of the County of London (cr. 1889) and the ancient Lord-Lieutenancy of Middlesex. The ceremonial county of Greater London does not include the City of London, which has its own Commission of Lieutenancy.

List of Lord-Lieutenants of Greater London

From 1965, the following have served as HM Lord-Lieutenant of Greater London: