Schedule 1 SCHEDULED SUBSTANCES Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: Sch 1 am by Controlled Drugs (Substances Useful for Manufacture) (Intra-Community Trade) 2001 reg 2 Sch 1 am by Controlled Drugs (Substances Useful for Manufacture) (Intra-Community Trade) 2004 reg 2(1), (2) CATEGORY 1 CATEGORY 2 ← Signature Schedule 1 Schedule 2 →