 In the parliament of July 1321, Edmund briefly sided with the opposition when he agreed to exile the Despensers, but later claimed this had been done under duress, and in November sat on the council that annulled the exile.In October, Edmund was once more employed in a move against Badlesmere, when he took part in a siege on Leeds Castle in Kent, which was held by Badlesmere.After Badlesmere was forced to surrender, hostilities moved to the Welsh Marches, where Roger Mortimer and others were in open revolt.