Interesting story. A battle that  possibly led to the formation of the Scots under one ruler.

I found out an Interesting fact about  Ecgfrith the defeated Anglo Saxon king. He probably introduced the earliest Penny coinage.

"Ecgfrith appears to have been the earliest Northumbrian king, and perhaps the earliest of the Anglo-Saxon rulers, to have issued the silver penny, which became the mainstay of English coinage for centuries afterwards.

Coins had been produced by the Anglo-Saxons since the late 6th century, modelled on the coins being produced by the Merovingians in Francia, but these were rare, the most common being gold scillingas (shillings) or thrymsas.

Ecgfrith's pennies, also known as sceattas, were thick and cast in moulds, and were issued on a large scale"

Source Google.