Sorry I think there's been some confusion. Forex refers to the currencies exchange markets, not swapping holiday money at a bureau de change or doing the same t

Sorry I think there's been some confusion. Forex refers to the currencies exchange markets, not swapping holiday money at a bureau de change or doing the same through your bank. (As an aside it's pretty straightforward to open a USD account in the UK.) While HN is great and all it sounds like you need to consult an accountant.