11. The movement of a pig to a show or exhibition provided that—
(a)it is isolated for 20 days prior to the movement taking place in premises approved for this purpose by a veterinary inspector; or
(b)it has been returned to its premises of origin from a show or exhibition and isolated at its premises of origin in premises approved in accordance with paragraph (a) from the time of arriving from the first show or exhibition to the time of leaving for the second show or exhibition.