Lord Mayor of London been mandatory for election to the Lord Mayoralty. Two Sheriffs are selected annually by Common Hall, which meets on Midsummer's Day for this purpose. By an ordinance of 1435, the Lord Mayor must be chosen from amongst the Aldermen of the City of London. Those on the electoral roll of each of the City's 25 Wards select one Alderman, who formerly held office for life or until resignation. Now each Alderman must submit for re-election at least once in every six years. The Lord Mayor is then sworn in November, on the day before the Lord Mayor's Show ("see below").
Frederick Bull (Lord Mayor of London) 1772. He became Lord Mayor of London for 1773-74. Bull stood for the City of London at a by-election in 1773 and was returned after a hard-fought contest on 23 December 1773. He was returned for the City after a contest again in 1774 and 1780. Bull was a Dissenter and close supporter of John Wilkes. He followed the Bill of Rights Society programme throughout his parliamentary career. His politics were radical and anti-Popery and in the spring of 1780 he supported Lord George Gordon’s Protestant crusade which led to the riots in June. Bull retired from business about 1782.