Except, of course, tangible moveable property bought and sold for less than £6,000 which is exempt from CGT as is tangible moveable property which is a wasting asset, no matter what the proceeds, unless it has been subject to capital allowances.Boats are generally exempt except for "yachts, barges or boats used as a residence which may have a useful life of more than 50 years". There are other things too, cars, decorations for valour, insurance policies etc. As I said, this is complicated and professional advice is necessary. Whether I get paid for it or not, my professional body holds me liable, and I'm sure a court would too.
Just for clarity and not to criticise, the current VAT registration threshold is £77000.
I suppose my complaint, if I had one in all this, is the certainty with which some who have commented express their views on the basis of very limited information in the original post. That and what seems like a reluctance to resist HMRC when there is a case to argue.