6.— (1) This section applies where a person is—

(a) a registered medical practitioner within the meaning of section 2 of the Medical Practitioners Act 2007,

(b) a registered dentist, being a person whose name is entered for the time being in the Register of Dentists established under section 26 of the Dentists Act 1985,

(c) a registered nurse, being a person whose name is entered for the time being in the register of nurses established under section 27 of the Nurses Act 1985,

(d) a registered pharmacist, druggist or pharmaceutical assistant, being a person registered in a register set up under section 13 of the Pharmacy Act 2007, or

(e) a member of such class of persons as the Minister may, after consultation with the Minister for Health and Children and such other Minister of the Government as he or she thinks appropriate, by order designate.

(2) It shall not be an offence for a person referred to in subsection (1) to sell, import or export a psychoactive substance or to publish or display or cause to be published or displayed any advertisement relating to a psychoactive substance if—

(a) the sale, importation or exportation or advertisement of the substance concerned was for the purpose of his or her profession, and

(b) the sale, importation or exportation or advertisement of the substance by that person in the course of his or her profession was otherwise lawful.