22. A person moving products of animal origin between customs temporary storage arrangements and a free zone or free warehouse, or from one free zone or free warehouse to another, shall only do so—
(a)under customs control;
(b)by means of transport sealed by an official veterinary surgeon or a person under his supervision or, in the case of fishery products or live bivalve molluscs or other shellfish, by an authorised officer;
(c)if the products are accompanied by a document signed by an official veterinary surgeon or, in the case of fishery products or live bivalve molluscs or other shellfish, by an authorised officer specifying which checks have been carried out in relation thereto.