The Misuse of Drugs Act 1971 (Modification) Order 2003
This Order adds eight substances to Schedule 2 to the Misuse of Drugs Act 1971 which specifies drugs which are subject to control under the Act. Two of the substances, Dihydroetorphine and Remifentanil, are added as Class A drugs; and the remaining six, 4-Androstene-3, 17-dione; 5-Androstene-3, 17-diol; 4-Hydroxy-n-butyric acid; 19-Nor-4-Androstene-3; 17-dione, 19-Nor-5-Androstene-3, 17-diol and Zolpidem, are added as Class C drugs.