Clause 4(1): amended, on 10 February 2017, by clause 4 of the Misuse of Drugs (Approved Laboratories and Analysts in Charge) Amendment Notice 2017 (LI 2017/8).
Clause 4(2): amended, on 13 April 2022, by clause 4(1) of the Misuse of Drugs (Approved Laboratories and Analysts in Charge) Amendment Notice 2022 (SL 2022/105).
Clause 4(3): amended, on 13 April 2022, by clause 4(2) of the Misuse of Drugs (Approved Laboratories and Analysts in Charge) Amendment Notice 2022 (SL 2022/105).