Quick VAT Question

Hi,



I've got a quick VAT question for you -



I am starting up an e-commerce business. I will be getting UK suppliers to ship directly to the customers. I live in Guernsey so we don't pay VAT. However, I will need to charge UK customers VAT (as our suppliers will charge it) and Channel Islands customers without VAT. Obviously I will need to make something as well.



Am I allowed to specify an incl and excl VAT price if I'm not VAT registered? or with a 20% difference in the prices.



I am not sure the best way to charge UK customers 20% more (equating to VAT amount). Any advice appreciated.



Thanks!