Comment by graemep

The term "non-dom" usually means foreigners in the UK making use of the tax dodge. In that case, British banks are happy to open accounts for them, especially as they are rich.

Some accounts will be opened for other foreigners in the UK - sometimes the "basic" accounts .

Lots of British people who have retired abroad on more modest incomes have had their accounts closed: https://www.telegraph.co.uk/money/banking/barclays-to-debank...