High Quality Content by WIKIPEDIA articles! Admiral Sir Jonathon Band, GCB, DL, ADC (born 2 February 1950), from 2006 to 2009, was the First Sea Lord of the United Kingdom, the most senior serving officer in the Royal Navy. Before serving as First Sea Lord he was Commander-in-Chief Fleet. Since becoming First Sea Lord, Band had been a firm advocate of the creation of new ships to meet new threats and maintain the status of the Royal Navy as one of the world`s leading naval forces.