Invalidation of veterinary documents
27. Where an official veterinary surgeon or an authorised officer serves a notice requiring redispatch of a product pursuant to regulation 21(2)(a), or takes charge of a consignment pursuant to regulation 24(2), any person who has possession or control of the required documents relating to that product or consignment shall immediately submit them to the official veterinary surgeon or authorised officer, as the case may be, for invalidation.