Converting money

If you need cash, use a bank ATM in Scotland.

Depending on your itinerary, you may not need much. Most places accept credit and debit cards. On our 2+ weeks in Scotland in 2023 we spent less than £20 in cash.

I agree. You probably won't need any, but if you must just hit a local bank ATM. On our last trip a couple of years ago I never spent any of my cash at all - it was all credit cards.

You cannot "convert" USD to another currency. You can use USD to purc=hase another currency, at a large mark-up. Withdraw from your bank account from a bank-operated ATM, and decline letting them do the withdrawal amount in the USD they want to convert it to if offered.

If you need a large amount of cash to pay for a lodging, you might have to do that at your bank/CU before you travel. ATMs and debit cards have daily limits on the amount that can be withdrawn. For normal spending, you'll need very little cash.
https://www.ricksteves.com/travel-tips/money/cash-machine-atm-tips

If you need a large amount of cash to pay for a lodging

….stay somewhere else.

For other things you won’t need much cash. Just celebrated my 5th anniversary since I last held a coin or bank note in the UK or Ireland.

NOT the question you are asking but do you do ApplePay or GooglePay at home? If not I recommend you start as almost everyone in Scotland will take contactless payments and bills to your accounts in GBP which is to your advantage.

Before a trip you can order currency through many banks and some AAA offices. Check with your bank. Some malls also have booths where you can exchange currency.

As stated, a bank ATM upon arrival will provide the best rate. With most establishments using contactless payment very little physical currency will be needed.

as mentioned by others, and particularly our Cornish mate, cash is needed rarely.

I carry 2 notes in my wallet just in case, and change them when the notes gp out of circulation. Simply do not use them. Even my wife's hairdresser is card only, any tips added on the card now.

Don't go buying a wad of money thinking you will need it.

Avoid the ATMs or currency exchanges at the airport as their rates are the worst. You won't need cash except for a very few B&Bs and some boat trips.

I am just back from the islands. While most of the businesses accepted cards. there were a few with 'we prefer cash' signs.

It is always best to have some cash incase the systems go down. If you need it get it from an ATM from a major bank.

I use my credit card via Apple Pay for almost every purchase. The only time I wished I would have had cash was when I was in the U.K. and visited some of the very small historic churches that did not have the automatic payment machines like the larger churches. I felt bad that I was not able to leave cash then, and when I go back, I will probably get about £50, which I'm sure will last me for my entire trip.