In the name of his fellow bishops Edmund admonished Henry III of England at Westminster, on 2 February 1234, to heed the example of his father, John of England. A week after his consecration he again appeared before the king with the barons and bishops, this time threatening Henry with excommunication if he refused to dismiss his councillors, many of them foreign, and particularly Peter des Roches, Bishop of Winchester. Henry yielded, and the favourites were dismissed, Hubert de Burgh (whom they had imprisoned) was released and reconciled to the king and soon the archbishop was sent to Wales to negotiate peace with Llywelyn the Great. Edmund's success, however, turned the king against him.