These Regulations amend the Misuse of Drugs Regulations 2001 (S.I. 2001/3998) and the Misuse of Drugs (Designation) (England, Wales and Scotland) Order 2015 (S.I. 2015/704).
Link: The Misuse of Drugs and Misuse of Drugs (Designation) (Amendment) (England, Wales and Scotland) Regulations 2019
Source: Legislation .gov.uk