It was pointed out to me that the British king never really beat the Scottish king. “I don't know what your Scottish readers will say to your comment that the King of England beat the King of Scotland in battle :-) The reality was James VI inherited the crown on the death of Elizabeth I and became James I of England and united the Crowns, but not the Kingdoms, it was the last of the Stuarts, Anne that did that, with the Act of Union.”
Technically, I specified, “Each land had their own king, and they battled often. England’s king won.” At the time of the Vikings, England was carved up into many small kingdoms. At the beginning of the Viking period, the sack of Lindisfarne in 793, there were seven kingdoms, known as the Heptarchy. Over the next few hundred years, the number declined, some by submission to other English kings and some by submission to the Vikings. Eventually they ended up with just one English king.
I think this one is a touch nit-picky, but you’re allowed to disagree. Thanks for reading!