11. A person shall not market genetically modified seed potatoes unless—
(a)it is clearly indicated in the sales catalogue of the person marketing the seed potatoes and in any other marketing information or marketing representations provided by that person, that the seed potatoes have been genetically modified; and
(b)any label or document, whether official or otherwise, affixed to, accompanying or following a lot or any part of a lot in accordance with the provisions of regulation 10(2), 12 or 15, shall clearly indicate that seed potatoes have been genetically modified.