The Duke of York and his second son Edmund, Earl of Rutland, retired to the relative safety of Dublin, Ireland.

Neither however succeeded in occupying their new posts as the Irish refused to dislodge York and the gates of Calais remained firmly closed to their new 'Captain'.

[citation needed] The Lancastrians gave Somerset an army to storm Calais, but first they had to cross the Channel, so the construction of a fleet was started at Sandwich in Kent.

[5] Warwick left his uncle, Lord Fauconberg, in Sandwich with a small force of Yorkists to act as a bridgehead for his planned invasion of England.

Once in position, he sent a message to the king saying that "at ii howres after none he wolde speke with hym, or elles dye in the feeld".

When Warwick reached the Lancastrian left flank, commanded by Lord Grey of Ruthin,[8] treachery ensued.

This treachery was the result of a secret message from Lord Grey to March saying that he would change sides if the Yorkists would back him in a property dispute with Henry Holland, 3rd Duke of Exeter (his maternal cousin).

The defenders were unable to manoeuvre inside the fortifications, and fled the field as their line was rolled up by attacking Yorkists.

[2] Showing him proper respect they escorted him to Delapré Abbey, then Northampton, and finally London, where the tower garrison surrendered soon after.