1. Yes. Note. Sole trader is NOT a limited company, which, in itself opens you up for a storm of paperwork and tax liability.
2. And you need to write to HMRC asking for a certificate to say you pay UK NI insurance and thus, in effect, opt out of US s/s which you have to send with your 1040 every year.
3. Yes, as I understand it, at the moment, though I don't have to complete one as my total assets are not worth more than that as I have a £140k overdraft, but (a) I hope I will one day not be in debt up to my ass and (b) just because they don't do anything with the information NOW doesn't mean they won't later.
I don't want to be American if this is how I'm to be treated. IT'S NONE OF THEIR BUSINESS WHAT I HAVE IN THE BANK! It's insulting enough being treated like sh*t by the TSA. My father won't even leave the US for fear of their treatment.
So, in the meantime, I file my tax returns on my income and don't own a company and don't have total assets over $10k, just to live an easy life. It's not about tax avoidance (I don't have anything to tax!) but running a business is hard enough in the UK without having to worry about filling in a US tax form wrong (or, even worse, not filling one in at all) and landing yourself in court.
Many here will think their little blue book is valuable enough to be treated like sh*t by their elected officials. I don't.