8.—(1) Subject to regulation 20(4) (suspension of requirements and notices pending appeal) and sub-paragraph (2), a fixed monetary penalty shall be paid by a seller within 56 days beginning with the date of service of the final notice.
(2) If a decision to impose a fixed monetary penalty is the subject of an appeal which upholds the imposition of a penalty, that penalty shall be paid by the seller within 28 days beginning with the date upon which the appeal is determined.