RF01

Hello, I've read the rules, but I have to admit that I couldn't understand them clearly. Additionally, I've asked attorneys and have been getting different answers, so I figured it would be better to ask here. a foreign business established in Qatar or Saudi Arabia, that sells their product(s) Worldwide (Including the UK) through an Online Store. The products are shipped directly to customers from China (including UK Customers) - so, it is a direct B2C. Have no business entity/warehouses/offices/employees/etc.. in the UK. UK Customers come from Ads made in other countries' social media. So, even marketing is not done in the UK. Questions: - 1- Will this foreign business have to register anything in the UK? If yes, what is it that they have to register for exactly? 2- Incase it is VAT, what if the foreign business doesn't want to register for VAT (because it is overwhelming for them as a small business), can they just pass the VAT obligation to their UK customers when the shipment arrives to the UK? (the foreign business would arrange the shipping and adds an invoice) Thank you!