Admiral Sir Charles Adam was a Scottish Royal Navy officer and politician who served during the Napoleonic Wars. He later commanded the royal yacht, Royal Sovereign, and was the Member of Parliament for Clackmannanshire and Kinross-shire. He held the office of First Naval Lord three times. In that capacity he dealt ably with the economies of a peacetime budget, provided naval support for the expulsion of Muhammad Ali's forces from Syria in 1840 and ensured technological progress continued. He was also the father of William Patrick Adam, a colonial administrator and Liberal politician.

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.