Norman and Medieval London of 1381 led by Wat Tyler, London was invaded. A group of peasants stormed the Tower of London and executed the Lord Chancellor, Archbishop Simon Sudbury, and the Lord Treasurer. The peasants looted the city and set fire to numerous buildings. Tyler was stabbed to death by the Lord Mayor William Walworth in a confrontation at Smithfield, thus ending the revolt. During the Wars of the Roses there was strong support in London for the Yorkist cause. The Lancastrian Henry VI was forced to leave London for the Midlands in 1456 due to hostile attitudes in the capital. He was
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").