I want to register as a sole trader in the UK and so far I know that I will have to register as self employed with HMRC and that I will have to keep track of business expenses and profit. But I want to know what the process is like before I go and do anything. Will I have to provide a copy of my passport or anything similar? How about company name? How do I get that? Can I just become a sole trader and then use any company name I want as long as it's not been registered as an LTD by someone else? Or do I have to notify anyone? I need some help and advice... anyone?