4.—(1) The experience prescribed for the purpose of section 90 of the Act is the satisfactory completion of a period of not less than 6 months, or periods amounting to not less than 6 months, employment or voluntary work in carrying out drugs assessments.
(2) A person must have obtained the experience specified in paragraph (1) within the period of 5 years prior to the date on which that person applies to become a drugs assessor.