At this moment Edward became involved in a quarrel with his own lord superior Phillip, king of France, by whom he was in turned summoned to appear under the pain of contumacy. Edward met this demand by a renunciation of allegiance to Phillip and a declaration of war, and called upon Baliol for aid as his vassal; but Baliol was also a vassal of the French king, and had estates in France liable to seizure. He therefore hesitated. Edward further ordered him to lay an embargo upon all vessels in the ports of Scotland, and required the attendance of many of the Scottish barons in his expedition to France. Finding his orders disobeyed, on the 16th of October Edward issued a writ to the sheriff of Northampton, "to seize all lands, goods, and chattels of John Baliol and other Scots."

The Scotch held a parliament at Scone. All Englishmen holding office were summarily dismissed. A committee of the estates was appointed to act as guardian of the kingdom, and Baliol himself was deprived of all active power; but an instrument was prepared in his name, reciting the injuries that he and his subjects had sustained at the hands of the English king, and renouncing all further allegiance. Following this up, a league was concluded, offensive and defensive, between the French king and Scotland, represented by the prelates, nobles, and community. Edward Baliol, the king's son, was contracted to marry the French king's niece. Phillip bound himself to assist Scotland against any invasion of England, and the Scotch agreed to cross the Border in case Edward invaded France.