appeals and thingeys are here
https://www.gov.uk/disclosure-barring-service-check/appeals-and-disputes
what would you be appealing if it happened ?
getting it taken off would mean it didnt happen
but that is not true is it ?
the law says you can insist of accurate up to date records
I write to the police at least once a year about my tenants
('that awful tenant of mine has moved' is usually the message)
but here I am not sure what appeal point you would make.
sorry
the short verstion is: I agree with hc