Check your VAT ID on the European Commission's VIES website here (Northern Ireland only)

If there’s a problem with your VAT ID, our website will explain the problem and suggest a solution.

All information, including personal information, related to this request for exemption from VAT, including the VAT Identification Number, will be transferred, stored and processed in accordance with the terms of the VistaPrint Privacy and Security Policy. VistaPrint reserves the right to request and perform additional verification regarding your VAT taxable status from you or government authorities as permitted by law. Such information will be processed in accordance with the terms of the VistaPrint Privacy and Cookies Policy.