Admiralty (United Kingdom)

The Admiralty was a department of the Government of the United Kingdom that was responsible for the command of the Royal Navy. Historically, its titular head was the Lord High Admiral – one of the Great Officers of State. For much of its history, from the early 18th century until its abolition, the role of the Lord High Admiral was almost invariably put "in commission" and exercised by the Lords Commissioner of the Admiralty, who sat on the governing Board of Admiralty, rather than by a single person. The Admiralty was replaced by the Admiralty Board in 1964, as part of the reforms that created the Ministry of Defence and its Navy Department (later Navy Command).

Before the Acts of Union 1707, the Office of the Admiralty and Marine Affairs administered the Royal Navy of the Kingdom of England, which merged with the Royal Scots Navy and then absorbed the responsibilities of the Lord High Admiral of the Kingdom of Scotland with the unification of the Kingdom of Great Britain. The Admiralty was among the most important departments of the British Government, because of the Royal Navy's role in the expansion and maintenance of the English overseas possessions in the 17th century, the British Empire in the 18th century, and subsequently.

The modern Admiralty Board, to which the functions of the Admiralty were transferred in 1964, is a committee of the tri-service Defence Council of the United Kingdom. This Admiralty Board meets only twice a year, and the day-to-day running of the Royal Navy is controlled by a Navy Board (not to be confused with the historic Navy Board). It is common for the various authorities now in charge of the Royal Navy to be referred to as simply 'The Admiralty'.

Since 1964, the title of Lord High Admiral of the United Kingdom has been vested in the monarch; the title was awarded to Prince Philip, Duke of Edinburgh by Queen Elizabeth II on his 90th birthday in 2011 and remained with him until his death in 2021. There also continues to be a Vice-Admiral of the United Kingdom and a Rear-Admiral of the United Kingdom, both of which are honorary offices.

The office of Admiral of England (later Lord Admiral, and later Lord High Admiral) was created around 1400; there had previously been Admirals of the northern and western seas. King Henry VIII established the Council of the Marine—later to become the Navy Board—in 1546, to oversee administrative affairs of the naval service. Operational control of the Royal Navy remained the responsibility of the Lord High Admiral, who was one of the nine Great Officers of State. This management approach would continue in force in the Royal Navy until 1832.

King Charles I put the office of Lord High Admiral into commission in 1628, and control of the Royal Navy passed to a committee in the form of the Board of Admiralty. The office of Lord High Admiral passed a number of times in and out of commission until 1709, after which the office was almost permanently in commission (the last Lord High Admiral being the future King William IV in the early 19th century).

In this organization a dual system operated the Lord High Admiral (from 1546) then Commissioners of the Admiralty (from 1628) exercised the function of general control (military administration) of the Navy and they were usually responsible for the conduct of any war, while the actual supply lines, support and services were managed by four principal officers, namely, the Treasurer, Comptroller, Surveyor and Clerk of the Acts, responsible individually for finance, supervision of accounts, shipbuilding and maintenance of ships, and record of business. These principal officers came to be known as the Navy Board responsible for 'civil administration' of the navy, from 1546 to 1832.

This structure of administering the navy lasted for 285 years, however, the supply system was often inefficient and corrupt its deficiencies were due as much to its limitations of the times they operated in. The various functions within the Admiralty were not coordinated effectively and lacked inter-dependency with each other, with the result that in 1832, Sir James Graham abolished the Navy Board and merged its functions within those of the Board of Admiralty. At the time this had distinct advantages; however, it failed to retain the principle of distinctions between the Admiralty and supply, and a lot of bureaucracy followed with the merger.