The revolt had various causes, including the socio-economic and political tensions generated by the Black Death in the 1340s, the high taxes resulting from the conflict with France during the Hundred Years' War, and instability within the local leadership of London.he revolt of 1381 broke out in Essex, following the arrival of John Bampton to investigate non-payment of the poll tax on 30 May. Bampton was a member of Parliament, a Justice of the Peace and well-connected with royal circles.