HSBC Expat springs to mind. There are limitations on these accounts though. Buying shares is generally fine, but managed products like ETFs are a good deal more limited so you can’t, for example, buy American domiciled ETFs through Schwab.
HSBC Expat has a large opening balance requirement that I can’t meet at this stage of my career (£50,000) which is unfortunate.
Considering DeGiro currently. American options aren’t at the top of my list (bad apps, bad consumer protections + other more personal issues) , so I’m trying to avoid them where possible.