The Bishopsgate mutiny occurred in April 1649 when soldiers of Colonel Edward Whalley's regiment of the New Model Army refused to obey orders and leave London. At the end of the mutiny one soldier, a supporter of the Levellers, Robert Lockyer, was executed by firing squad. 300 infantrymen of Colonel John Hewson's regiment, who declared that they would not serve in Ireland until the Leveller programme had been realised, were cashiered without arrears of pay, which was the threat that had been used to quell the Corkbush Field mutiny.