Vice Admiral George Darby was a Royal Navy officer. He commanded HMS Norwich at the capture of Martinique in 1762 during the Seven Years' War. He went on to command the Channel Fleet during the American Revolutionary War and later in that war served as First Naval Lord when he commanded the force that relieved Gibraltar from its siege by the Spanish in April 1781.

The First Sea Lord and Chief of the Naval Staff (1SL/CNS) is a statutory position in the British Armed Forces usually held by a four star admiral. As the highest-ranking officer to serve in the Royal Navy, the chief is the principal military advisor on matters pertaining to the navy and a deputy to the Secretary of State for Defence. In a separate capacity, the CNS is a member of the Chiefs of Staff Committee and, thereby, a military advisor to the National Security Council, the prime minister and the monarch. The First Sea Lord is typically the highest-ranking officer on active duty of the Royal Navy unless the Chief of the Defence Staff is a naval officer. Admiral Ben Key was appointed First Sea Lord in November 2021.