5.—(1) Subject to paragraph (2), no person may administer or knowingly cause or permit to be administered to any animal any product which is, or which contains, a substance listed in Annex II or III to Council Directive 96/22.
(2) The prohibition in paragraph (1) does not apply to the administration of a compliant veterinary medicinal product—
(a)containing testosterone, progesterone or a derivative of these substances which readily yields the parent compound on hydrolysis after absorption at the site of application, if the administration is in accordance with regulation 26;
(b)containing allyl trenbolone or a beta-agonist, if the administration is in accordance with regulation 27; or
(c)having oestrogenic action (but not containing oestradiol 17b or its ester-like derivatives), androgenic action or gestagenic action, if the administration is in accordance with regulation 28.
(3) In paragraph (2), “compliant veterinary medicinal product” means a veterinary medicinal product which complies with the requirements of regulation 25.