If you receive an appeal from a claimant who:
You should follow the guidance at CCOM21500 and remind them of
their earlier agreement and invite them to withdraw their appeal.
If the claimant has provided new information or they refuse
to withdraw the appeal you should review the grounds of the appeal
to decide if you can revise your decision, see
CCM17760.
If the claimant(s) appeal(s) against your decision and they
did not previously agree HMRC’s information you should review
the grounds of the appeal to decide if you can revise your
decision, see
CCM17760.