In 1964, the functions of the Admiralty were transferred to a new Admiralty Board, which is a committee of the tri-service Defence Council of the United Kingdom and part of the Navy Department of the Ministry of Defence. The new 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 described later in this article). It is common for the various authorities now in charge of the Royal Navy to be referred to as simply 'The Admiralty'.
The title of Lord High Admiral of the United Kingdom was vested in the monarch from 1964 to 2011. The title was awarded to Philip, Duke of Edinburgh by Queen Elizabeth II on his 90th birthday. 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.
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).
The first Navy Board was abolished as a separate entity in 1831, and its duties and responsibilities were given over to the Admiralty.