ARTG6540 | Restoration decisions: Appealing against a review decision: Time limit for appealing to the tribunal
From HM Revenue & Customs · Appeals reviews and tribunals guidance
The time limit for customers to appeal against a restoration decision review conclusion is 30 days from
the date of the review conclusion letter, or
if HMRC have not completed their review within the 45 day review period, within 75 days of the date the review was required.