3.—(1) Subject to paragraph (2), a supplier shall not market any propagating material unless it complies with the requirements of these Regulations.
(2) These Regulations shall not apply to propagating material intended for—
(a)export to third countries, if identified as such and kept sufficiently isolated from plant material not intended for such export;
(b)trials or scientific purposes;
(c)selection work;
(d)use in the conservation of genetic diversity.