Barne had prospered and risen sufficiently in civic life by 1542 that he was in December of that year installed as alderman for the ward of Portsoken. Less than three years later he was selected, and at Michaelmas 1545 was installed, as Sheriff of London together with Ralph Aleyn (three times Master of the Worshipful Company of Grocers), to coincide with the mayoralty of Sir Martin Bowes (citizen and Goldsmith) for the term 1545-1546.A.B. Beavan, The Aldermen of the City of London Temp. Henry III to 1912 (Corporation of the City of London, 1913), II, p. 31 (Internet Archive). This was the last full term before the death of King Henry VIII in January 1546/47.
