Yorkist triumph

Edward of March advanced towards London from the west where he had joined forces with Warwick's surviving forces. This coincided with the northward retreat by the queen to Dunstable, allowing Edward and Warwick to enter London with their army. They were welcomed with enthusiasm, money and supplies by the largely Yorkist-supporting city. Edward could no longer claim simply to be trying to free the king from bad councillors; it had become a battle for the crown. Edward needed authority, and this seemed forthcoming when Thomas Kempe, the Bishop of London, asked the people of London their opinion and they replied with shouts of "King Edward". This was quickly confirmed by Parliament, and Edward was unofficially crowned in a hastily arranged ceremony at Westminster Abbey.

Edward vowed he would not have a formal coronation until Henry and Margaret were executed or exiled.

Edward and Warwick marched north, gathering a large army as they went, and met an equally impressive Lancastrian army at Towton. The Battle of Towton, near York, was the biggest battle of the Wars of the Roses. Both sides agreed beforehand that the issue was to be settled that day, with no quarter asked or given. An estimated 40,000—80,000 men took part, with over 20,000 men being killed during (and after) the battle, an enormous number for the time and the greatest recorded single day's loss of life on English soil. Edward and his army won a decisive victory.