So by holding UK GBP in bank it's biggest risk because pound is out from Everywhere the UK people definately need to hold cryptocurrency Because UK pound will be first currency wich will fall hardest when all the western countries having financial issues.
If I'm to choose between $1000 dollar and £1000 pounds, I will definitely go for £1000 pounds, simply because it's market value is more higher than the US dollar. Because the fact that people now choose crypto as a store of value for their asset and US having a stable coin such as USDC, that doesn't make British pounds useless, as it will still remains useful and more valuable then the USD, inasmuch as it's not always common for international monetary transactions. One thing you just need to understand is that not all countries need to have their fiat currencies in stable coins.