Banknotes
Up until the middle of the 19th century, privately owned banks in Great Britain and Ireland were permitted to issue their own banknotes, and money issued by provincial Scottish, English, Welsh and Irish banking companies circulated freely as a means of payment. While the Bank of England eventually gained a monopoly for issuing banknotes in England and Wales, Scottish banks retained the right to issue their own banknotes and continue to do so to this day. The Royal Bank of Scotland, along with Clydesdale Bank and Bank of Scotland, still prints its own banknotes
Notes issued by Scottish banks circulate widely and may be used as a means of payment throughout Scotland and the rest of the United Kingdom; although they do not have the status of legal tender they are accepted as promissory notes. It should be noted that no paper money is legal tender in Scotland, even that issued by the Bank of England (which is legal tender in England and Wales).
Read more about this topic: The Royal Bank Of Scotland