Since most controlled substances have medical &/or scientific uses, there
are various exemptions to the general prohibition on possession and supply.
Under the Misuse of Drugs Regulations, substances are categorised under five
schedules to determine how broad an exemption applies.
Schedule 1
This schedule includes include marijuana / cannabis, coca leaf, ecstasy, LSD, raw
opium and psilocin (when extracted from magic mushrooms).
These drugs are not authorised for medical use and can only be supplied,
possessed or administered in exceptional circumstances under a special Home
Office licence (e.g., for research purposes).
Schedule 2
This schedule includes amphetamines, cocaine, dihydrocodeine, Diconal,
heroin, methadone, morphine, opium in medicinal form, pethidine and Ritalin.
These drugs are available for medical use and can be prescribed by doctors.
It is illegal for people to be in possession of these drugs without a
prescription. They are also subject to strict record keeping and storage
requirements.