On June 12, 1381, during the Peasants' Revolt in England, rebels arrived at Blackheath. From the article:
"The Peasants' Revolt, also known as the Great Revolt, was a largely unsuccessful popular uprising in England in June 1381. The rebellion's leaders included Wat Tyler and they wanted massive social changes which included a removal of the poll tax, an end to the cap on labour wages, redistribution of the Church's wealth and the total abolition of serfdom.
The revolt began in the south-east of England and then spread to London and elsewhere. Although desiring social change, the rebels did not want to remove King Richard II of England (r. 1377-1399). It lasted only four weeks and was put down by Richard, first by negotiation and then through ruthless persecution of the ringleaders. The consequences of the revolt were, therefore, limited, but the poll tax was abandoned, restrictions on labour wages were not strictly enforced, and peasants continued the trend of buying their freedom from serfdom and becoming independent farmers."