I hope it's not a book on taxation or running a business
I hope it's not a book on taxation or running a business
it's a book about the right to remain silent in the UK, and how to exercise that right.
No comment
You pay VAT to suppliers, and, if liable, charge it to customers. Since you have no suppliers and as noted books are VAT-free then you don't need to bother with VAT. In you did then you would need a UK business and a VAT registration and a heap of paperwork.
Income tax is, in general, based on the territorial principle of where you did the work - it's nothing to do with where your customers are. You would not be liable to UK tax. However, if you are liable to HK tax on employment then you should, in principle, declare the income here and pay tax if you earn more than the tax-free allowances.