12The prohibition, in accordance with rules and subject to any exemption for which provision may be made by the rules, of the sale, or the consignment, offer or exposure for sale, or the export, of herring of any description or quality defined in the rules, unless such designation, mark or other means for indicating that the herring are of the said description or quality as may be prescribed by the rules is used in relation to the herring, in such manner as may be so prescribed, and the prohibition, except in relation to herring of such description or quality as may be so defined, of the use, in any manner or circumstances specified in the rules, of such designation, mark or other means as may be so prescribed for indicating that such herring are of that description or quality.
The rules shall be of no effect if and so far as they are inconsistent with any regulations made with regard to fishery produce under section 1 (power to prescribe grade designations) or 2 (power to prescribe grade designation marks) of the [1928 c. 19.] Agricultural Produce (Grading and Marking) Act 1928.