SACM12025 | Who can claim: Overview
From HM Revenue & Customs · Self Assessment Claims Manual
Any person may be able to make a claim for overpayment relief if they have
paid income tax, CGT, Class 4 NIC, bank payroll tax or corporation tax which they believe was not due, or
have been assessed for tax that they believe is not due.
See the particular guidance for claims to overpayment relief at
SACM12050+ explains what the person can claim.