Three products of the plant Cannabis sativa (also known as hemp) are commonly available in the UK:
• cannabis resin (hash);
• traditional herbal cannabis (marijuana); and
• sinsemilla (including skunk1).

This report is based on a review of the literature, with particular attention to material published since 2005. The Council also had the opportunity to consider oral and written evidence (Annexes C and D respectively) submitted by organisations and individuals with a special interest in cannabis.