I'm sorry to hear this Utxo. Don't bank with British banks, not even fintechs. Folks are unfortunately getting debanking left and right now. A friend of mine got debanked for buying and selling BTC on a big famous exchange, all KYCed and inside the system. They will likely close your account and ask for another account to deposit your money in 30 days. Let me know if you find an alternative with good FX rates (Revolut comes to mind, but they are also based in the UK).