More and more UK banks are closing accounts for non-residents without a UK address. If you are not a UK resident, it is nearly impossible to open a new account, but I have a solution.
You can open a simple offshore bank account in USD, THB, and CNY to receive rental income or make mortgage payments.
You don’t need to be a millionaire to have a decent account, nor do you need to keep £50,000 in it, as certain banks require. The minimum balance to avoid quarterly fees is just £5,000 or $7,000.
While this is not intended to operate as a current account, there is an option for a debit card, and it might just solve a problem for you.