“4.10 Will I have to account for VAT if my customer’s VAT number turns out to be invalid? No. but only if you: · have taken all reasonable steps to ensure that your customer is registered for VAT in the EC · have obtained and shown your customer’s EC VAT number on your VAT sales invoice, and · hold valid documentary evidence that the goods have left the UK 4.11 What is meant by ‘reasonable steps’? We will not regard you as having taken reasonable steps, as mentioned at paragraph 4.10, to ensure your customer is VAT registered in the EC if, for example: · the VAT number you quote does not conform to the published format for your customer’s Member State as shown at paragraphs 16.19, or · you use a VAT number which we have informed you is invalid, or · you use a VAT number which you know does not belong to your customer 4.12 Will VAT be chargeable if reasonable steps are not considered to have been taken? Yes. You will have to account for VAT at the appropriate rate on the goods in the UK.”