Haydn, Joseph Timothy. The Book of Dignities, Containing Lists of the Official Personages of the British Empire…from the Earliest Periods to the Present Time; Together with the Sovereigns and Rulers of the World, from the Foundation of their Respective States; the Orders of Knighthood of the United Kingdom and India, etc., Remodelled and Brought down to 1851 by…Joseph Haydn, Continued to the Present Time, with Numerous Additional Lists and an Index…by Horace Ockerby. 3^rd ed. London: W.H. Allen and Co., Limited, 1894.
Perkins Reference DA34 .H32 1894
A massive register in one volume with an excellent index and table of contents. Includes civil, diplomatic, legal, military, naval, and ecclesiastical officials for England, Wales, Scotland, Ireland, and India, and also colonial governors and bishops and the orders of knighthood. Generally only the higher officials are listed. The chronology dates from the 1880's as far back as information was available. The list of sovereigns of the world is also extensive.

Great Britain. The London Gazette. Bulletins and Other State Intelligence… Compiled and Arranged from the Official Documents in the London Gazette. London: 1793-
Perkins/Bostock Microfilm (1793-1856)
Perkins/Bostock Stacks 942.005 G786B (1812-1813)
Special Collections Library, Library Service Center, Rare Books (Reading Room only) (1808)
The official publication for governmental statements, announcements, orders, proclamations, ceremonies, regulations, etc., and for military, naval, civil, and ecclesiastical appointments. During the French Revolutionary and Napoleonic wars official pronouncements and battle reports predominated. Thereafter the Gazette became a source for the appointments of individuals. Annual indices. The Index to the London Gazette, 1830-1883, does not include the appointments.

Sainty, John Christopher. Admiralty Officials, 1660-1870... London: Athlone Press, 1975.
Perkins Reference VB57 .S24 1975
Lieutenants of Counties, 1585-1642... London: Athlone Press, 1970.
Perkins/Bostock Stacks D1 .L654 no.4-11
Officials of the Boards of Trade, 1660-1870... London: Athlone Press, 1974.
Perkins Reference JN248 .O345 v.3
Officials of the Secretaries of State, 1660- 1782... London: University of London, Institute of Historical Research, 1973.
Perkins Reference JN248 .O345 v.2
Treasury Officials, 1660-1870... London: Athlone Press, 1972.
Perkins Reference JN248 .O345 v.1

Valentine, Alan Chester. The British Establishment, 1760-1784; An Eighteenth-Century Biographical Dictionary… Norman: University of Oklahoma Press, 1970.
Perkins Reference CT781 .V3 1970
Concise biographical sketches that also include information about an individual's political alignments.

Beaven, Alfred Beaven. The Aldermen of the City of London Temp. Henry III.-1908. With Notes on the Parliamentary Representation of the City, the Aldermen and the Livery Companies, the Aldermanic Veto, Aldermanic Baronets and Knights… London: E. Fisher and Company, Limited, 1908-1913.
Perkins/Bostock Stacks JS3663 .B4 1908

Woodhead, J. R. The Rulers of London, 1660-1689; A Biographical Record of the Aldermen and Common Councilmen of the City of London. London: London and Middlesex Archeological Society, 1965.
Perkins/Bostock Stacks DA676.8.A1 W68 1965