Where, as a result of a formal investigation under section 439 or an inquiry under section 442—
(a) the certificate or licence of any person has been cancelled or suspended; or
(b) any person has been found to be at fault,
then, where no order is made under section 446 a person described in paragraph (a) or (b) of this section or any other person who, having an interest in the investigation or inquiry, has appeared at the hearing thereof and is affected by the decision of finding, may appeal to the High Court.