11.—(1) No person shall hold a sale of pigs on a farm except in accordance with a licence issued by an inspector of the local authority for the area in which the farm is situated.
(2) A licence under paragraph (1) above shall not be issued, and a sale shall not be held, unless—
(a)the sale will comprise only pigs forming the whole or part of the standing herd of that farm, and
(b)no animals (other than animals moved on to the farm in accordance with the provisions of article 3(3) of the Disease Control (Interim Measures) (Wales) (No. 2) Order 2002) have been moved on to that farm on the day of sale or within a period of 20 days preceding the day of sale.