The Royalists had held off the Parliamentarian forces but Charles knew his army was not up to another day's fighting. He was outnumbered and with the loss of Speen, his forces were vulnerable to another attack the next morning. He hastily retreated to the north, leaving his wounded and most of his guns and baggage in Donnington Castle. Much of the Royalist army withdrew over a bridge over the River Lambourne which was an obvious line of retreat, but no Parliamentarian troops blocked their path, and the Royalists were free to withdraw.