(1) The 20th February 1976 shall be the day appointed for the coming into operation of section 135(2) (repeal of enactments) of the Medicines Act 1968 (hereinafter referred to as “ the Act ”) for the purpose of—
(a) section 1 of the Therapeutic Substances Act 1956 (hereinafter referred to as “ the Act of 1956 ”) to the extent specified in paragraph (2) of this Article, and
(b) section 2 of the Act of 1956.
(2) The repeal of section 1 of the Act of 1956 shall have effect in respect of—
(a) the substances specified in paragraphs 2 and 4 of Schedule 1 to the Act of 1956,
(b) the substances specified in paragraphs 1 and 3 of that Schedule in so far as those substances are substances to which the restrictions imposed by sections 7(3) and 31(4) of the Act apply or, in the case of the said section 7(3), would apply but for any exemption from that subsection conferred under or by any provision of the Act, and
(c) all the substances added to that Schedule by regulations made under section 5(1)(d) of the Act of 1956 except the following in so far as they are not substances to which the restrictions imposed by sections 7(3) and 31(4) of the Act apply or, in the case of the said section 7(3), would apply but for any exemption from that subsection conferred under or by any provision of the Act:—
(i) preparations of the pituitary (posterior lobe) or the active principles thereof (whether obtained by fractionation of the gland or by synthesis) or of derivatives of those principles with the same specific biological action, which are intended for use by parenteral injection ,
(ii) corticotrophin and preparations thereof ,
(iii) heparin and preparations thereof intended for use by parenteral injection ,
(iv) hyaluronidase and preparations thereof intended for use by parenteral injection .