 Having been appointed an extra aide-de-camp to the King on 5 September 1831, he took command of the first-rate HMS "Victory" also at Portsmouth in December 1831 and then the second-rate HMS "Rodney" in the Mediterranean Fleet in August 1835.He was appointed a Companion of the Order of the Bath on 18 April 1839.Promoted to rear-admiral on 23 November 1841, Parker went on to be Admiral Superintendent of Portsmouth Dockyard, hoisting his flag in HMS "Victory", in August 1842 and Commander of the Experimental Squadron in July 1845.