The two best things about a Scottish £5 note are that a) you can buy a quiche and two cheese scones from Elanor’s honesty porch and b) they can go through the wash repeated times, be tumble dried scrunched up in a pocket and still spring out, perfectly smooth and ready to be popped into a tip box.
I recently wrote a Facebook post about Scottish money in the hope that it might help clarify confusions. Some people are so confidently wrong about things it takes your breath away.
Anyway, lots of people read it and said that it was useful so I thought I’d pop it up here. I will add an edit onto the end of the piece with information that people added or asked about that I didn’t think to include – the hive mind is a great thing.
So my lovely friends. There’s been a lot of confusion in the world of the internet about money in Scotland. Let me try to help in a few easy to understand steps.
• Scotland uses pounds sterling (£) like the rest of the UK
• Notes issued in Scotland look different from those issued in England.
• English notes are accepted in Scotland provided they are in current circulation.
• All Scottish notes have a shiny, plastic finish. Any papery notes are out of date. You MIGHT be able to exchange them in a bank but they may well refuse them unless you bank with them.
• You might have trouble using Scottish notes in England (particularly the South). They are uk currency but this does not mean any retailer HAS to accept them. You can swap Scottish notes for English notes at a bank.
• There is a £100 note. This may not be accepted by smaller shops. Again they don’t HAVE to accept your money so maybe split it at a bank if you have one.
As an aside tipping in cash is appreciated (a post on tipping is coming soon). Paying in cash is always appreciated (unless a place asks specifically for cards) by small businesses as it really helps us avoid significant fees from card suppliers.
EDITS:
American chums apparently you have to beware as some US banks are trying to slip you the old papery notes. Do not accept these. Also have a firm word with them. 
£1 notes: there are still some of these in circulation. Again they are UK currency but you might find they are not accepted so I’d swap them in a bank if you get them.
Some ATMS charge to withdraw cash, some don’t. If you say a sign saying FREE CASH in huge letters and ‘withdrawals’ in tiny letters that means you’re safe. But you absolutely need to check what your bank is charging. Mine is wonderful and doesn’t charge me to use an ATM in another country, other contributors suggested a REVOLUT card, I’m not going to recommend it because I have no personal experience but you might want to check it out.
Post Offices will change your money and accept out of date currency but don’t expect the amazing Eve in the dinky Carbost PO to have a grand in Scottish crispies handy to exchange for you.
Danske Bank notes from Northen Ireland are also UK currency. They look very ‘foreign’ (as it were) and you might need to be prepared to explain what they are. Again I’d recommend a swap at a bank in order to save yourself any trouble and not fluster your wait staff.
Some retail outlets and places to eat do not accept cash at all now. So definitely have a card in your wallet. If you use Amex bring it with you. More places than you think accept it and, let’s face it, it doesn’t take up any room.
In conclusion (like a proper year 10 essay), check your money before you set off, have a debit/credit card that you know works in the UK and have a brilliant time. Buying local is absolutely best, tipping in cash too (another post on tipping is brewing in my mind right this minute). You can be utterly spendalicious in Scotland or work to a strict budget and still have the best time. Fine dining at Edinbane Lodge or a swift pizza in Caberfeidh, glorious jewellery from Love from Skye or a Highland Cow fridge magnet from Tippicanoe – all memories to be treasured once you’re home.