35.—(1) Subject to paragraph (2), no person shall use a zootechnical additive for the purpose of animal feeding except an authorised zootechnical additive which—
(a)has been incorporated in a feedingstuff, and
(b)was incorporated in the feedingstuff in accordance with regulation 36.
(2) Nothing in paragraph (1) shall prohibit a person from feeding an animal—
(a)an unauthorised zootechnical additive, or
(b)a feedingstuff containing an unauthorised zootechnical additive
for an Article 6.4 purpose if the use of the additive or the feedingstuff, as the case may be, will constitute—
(i)a medicinal test on animals for which he has been issued with an animal test certificate, or
(ii)a regulated procedure for which he holds a personal licence, and which is specified in a project licence which authorises the procedure.