Admiral Sir Nigel Richard Essenhigh (born 8 November 1944) is a former Royal Navy officer who served as First Sea Lord and Chief of the Naval Staff from 2001 to 2002. He served as a navigating officer before commanding the Type 42 destroyer and then the Type 42 destroyer during the Gulf War. As First Sea Lord he entered into a contract to acquire up to 150 Joint Strike Fighter aircraft for the UK's two new aircraft carriers. In retirement he worked for Northrop Grumman and became a non-executive director of Babcock International. He remains a Deputy Lieutenant of Devon. Naval career Essenhigh was born in Newcastle upon Tyne and educated at St. Cuthbert's School. He joined the Royal Navy in 1963, and was promoted to sub-lieutenant on 4 June 1965 and to lieutenant on 1 May 1967. He qualified as a principal warfare officer in 1972, specialising in navigation. He served as a navigating officer on the frigate HMS Juno and then the destroyer HMS Antrim before joining the staff of the Flag Officer Sea Training. Promoted to lieutenant commander on 1 May 1975, he was posted to the destroyer HMS Glasgow in 1978. After his promotion to commander on 31 December 1980, Essenhigh joined the Ministry of Defence for duty with Naval Manpower Training: he worked on the 1981 Defence Review. He took command of the Type 42 destroyer HMS Nottingham in 1982 and saw service in the Atlantic, Mediterranean and West Indies. His next post was on board HMS Ark Royal during its construction in 1984. Promoted to captain on 31 December 1985, he attended the Royal College of Defence Studies in 1986 and then returned to the Ministry of Defence to be Assistant Director (Weapons and Ships) in the Naval Plans Department in 1987. He took command of another Type 42 destroyer, HMS Exeter, in April 1989, and saw operational service during the Gulf War. Essenhigh attended the Higher Command and Staff Course at the Staff College, Camberley in 1992 before being promoted to commodore and becoming Director of Naval Plans and Programmes at the Ministry of Defence later that year. Following promotion to rear admiral, he took up the position of Hydrographer of the Navy in February 1994, and was subsequently Assistant Chief of Defence Staff (Programmes) from March 1996. In September 1998 he was promoted to full admiral and was appointed to the post