SolvedVROBP5010 | Refunds of UK VAT for businesses established outside the UK: issue of claim forms (VAT 65A)
From HM Revenue & Customs · VAT Refunds to Overseas Business Persons
Claimants from outside the UK must use form VAT65A or a similar form issued by their official issuing authority to make their claims. The VAT65A can be downloaded from the website.
Details of what can be claimed and the time limits for making the claim can be found in section 4 of Notice 723A Refunds of UK VAT for non-UK businesses or EU VAT for UK businesses (Notice 723A) – GOV.UK ().