If both the delivery address and the invoice address are outside of the European Community (the EC) you can ignore VAT - it does not apply to you.
VAT is applied to most sales of goods within the EC.
Exports to countries within the EC are subject to VAT.
However, if both the delivery address and the invoice address are in the EC and not in the UK, and you can provide a valid VAT number for the company to be invoiced then we need not charge VAT on the sale. The company named on the invoice will then need to account for the VAT in their own country. If you would like to take advantage of this facility we need you to send us confirmation of your order on your company letterhead, showing your VAT registration number.
You can check your VAT number is valid at the Europa web site