Editor says, what if the Royalist army had forced their way into London? Please note that the opinions expressed in this post do not necessarily reflect the views of the author(s).
Editor says, in authoring this post we have repurpose content from Wikipedia which suggest - the engagement resulted in a standoff between the forces of King Charles I and the much larger Parliamentarian army under the command of the Earl of Essex. However, in successfully blocking the Royalist army's way to London, the Parliamentarians gained an important strategic victory because the standoff forced Charles and his army to retreat to Oxford for secure winter quarters.
 In OTL although he failed in that attempt because of Parliamentary strength there. After this, many officers wanted to open peace negotiations, contrary to Rupert's desire to carry on to London, but the king agreed with the officers and so the Earl of Essex managed to overtake them and reach London with his Parliamentary army by 8 November. Editorial comments are entered in [light green] typeface.