INTM333950 | Double Taxation applications and claims - Exchange of information and correspondence with overseas tax authorities: What to include in a letter to the overseas tax authorities
From HM Revenue & Customs · International Manual
When writing to overseas tax authorities your letter should include
the full name and address of the applicant/claimant
the name of the overseas tax office and their reference number
a reference to the ‘Exchange of Information’ article (quote the Article number) of the Double Taxation Agreement (DTA)
the reason for your letter (for example, an explanation of why relief has not been allowed)
a photocopy of the claim.
The Technical Adviser should sign the letter.