HMRC Guidance: Claim VAT back on tax-free shopping in Northern Ireland

Update August 20: More information has been added about who can use the VAT407 form to claim a refund of UK VAT.

How to get the VAT back on goods you buy in Northern Ireland from shops that offer tax-free shopping (VAT Notice 704/1).

The VAT Retail Export Scheme is no longer available in Great Britain (England, Scotland and Wales).
You can only buy tax-free goods from shops in Great Britain if they’re delivered straight to an address outside the UK. Check with the retailer if they offer this service.