I'm playing devil's advocate but a lot of the reason why places refuse to take Scottish notes is that in the early 2000s, the English notes had been updated with tons of security measures, while the Scottish notes had not, so forgers targeted Scottish notes (since they could produce very believable replicas) and the market got flooded with them. So for every
Thus why the bridge series was introduced in 2007, to add much needed security features and to make Scottish notes respectable again.
