Cannabis laws increasingly expose an uncomfortable contradiction at the heart of British drug policy.
The same substance that can be legally prescribed to one person may result in police action against another. Someone with the money, medical history and ability to access a specialist can legally possess cannabis. Someone using it for similar reasons without a prescription remains a criminal.
That does not mean every recreational user has a medical need. Nor does it mean cannabis is harmless. It does mean we should question whether criminalisation remains a fair, effective or honest response.
A punishment out of proportion
Cannabis remains a Class B controlled drug in the UK. Possession can theoretically result in up to five years in prison and an unlimited fine. Sentencing guidelines place the normal offence range considerably lower, from a discharge to 26 weeks’ custody, but imprisonment remains legally available.
Most people caught with a small quantity will not receive anything close to the maximum sentence. That is important to acknowledge.
But “most people are not imprisoned” is not a convincing defence of the law. The question is why adults should face police intervention, confiscation, possible prosecution and the threat of a criminal conviction for possessing a substance that is already consumed widely and can be legally prescribed.
In the year ending March 2026, police recorded 107,157 cannabis-possession offences in England and Wales. Just over half of all cannabis offences were resolved through community resolutions rather than charges.
That figure reveals two things. First, the criminal justice system is still spending substantial time dealing with cannabis. Second, even the system itself frequently treats these offences as too minor to justify prosecution.
If an offence is serious enough to remain criminal but so minor that it is commonly handled informally, perhaps it is the law—not simply the offender—that requires examination.
Legal medicine for some, illegal relief for others
Cannabis-based medicinal products became legally prescribable by specialist doctors on 1 November 2018.
This was a welcome recognition that cannabis and its compounds can have legitimate medical applications. But access through the NHS remains extremely restricted. The NHS states that very few people are likely to receive an NHS prescription, with routine access largely limited to particular forms of severe epilepsy, chemotherapy-related nausea and multiple-sclerosis spasticity. Private specialists can also legally prescribe cannabis-based medicines.
This creates an obvious social divide.
A patient who can navigate specialist care and afford private treatment may receive a legal supply of regulated cannabis. Another person may use unregulated cannabis to manage pain, trauma, sleeplessness or anxiety and be treated as an offender.
A prescription does not magically transform cannabis from a dangerous substance into a harmless one. It changes the legal authority under which it is possessed.
There are sound reasons for medical supervision, quality control and careful prescribing. But it is difficult to argue that the appropriate response to everyone outside that system is criminal punishment.
The hypocrisy is not that cannabis has risks
Cannabis is not harmless.
Frequent use can lead to dependency. High-THC products may increase mental-health risks for some people, particularly those already vulnerable to psychosis. Young people may face greater risks, and nobody should be permitted to drive while impaired. The NHS also warns that illegally purchased cannabis is especially dangerous because its strength, ingredients and quality are unknown.
Those facts should form part of an honest discussion.
However, acknowledging risk does not automatically justify prohibition. Alcohol can cause addiction, violence, liver disease and fatal accidents. Tobacco remains one of the most harmful consumer products legally sold. Britain responds to these substances through age restrictions, taxation, product standards, health warnings and rules governing where and how they can be used.
Cannabis, by contrast, is left largely in the hands of an illegal market.
Prohibition does not prevent cannabis from existing. It determines who controls its production, how its strength is communicated and whether consumers have any reliable information about what they are buying.
A regulated system could impose age limits, ingredient testing, potency labels, restrictions on advertising and penalties for supplying children. The present system offers none of those protections to the person purchasing cannabis illegally.
Criminalisation carries its own harms
Drug policy is often discussed as though the only possible harm comes from the drug itself.
But laws also create consequences.
A police encounter can affect a person’s trust in public institutions. Prosecution can disrupt employment, education and family life. Enforcement consumes police and court resources that could be directed towards violence, exploitation and organised crime.
The independent London Drugs Commission reached a similar conclusion in 2025. It recommended decriminalising the possession of small quantities of natural cannabis while continuing to target dealers and expanding education and health support. The commission did not recommend a completely unrestricted commercial market.
That distinction matters.
The choice is not simply between absolute prohibition and cannabis being sold beside sweets in every corner shop. Britain could stop criminalising personal possession while maintaining strict controls on production, sale, age, public use and impaired driving.
What a more honest policy could look like
A credible reform programme would begin by separating personal use from exploitation and organised supply.
Possession of a small quantity by an adult should not result in a criminal conviction. People experiencing dependency should be offered support rather than punishment. Products should be tested and clearly labelled. Sales to children and driving while impaired should remain criminal offences. Commercial operators should be licensed and monitored, with restrictions designed to prevent the aggressive marketing seen in the alcohol, tobacco and gambling industries.
Cannabis reform should also address previous convictions. It would be unjust to create a legal or decriminalised market while leaving ordinary people burdened by records for behaviour that the state no longer believes deserves punishment.
This is not a pro-cannabis free-for-all. It is a demand for proportionality.
Britain must decide what it actually believes
The UK government already accepts that cannabis has medical value. The police frequently resolve possession offences without prosecution. An independent commission has concluded that criminalising possession of small quantities cannot be justified by the substance’s relative harm.
Yet the law continues to describe the ordinary user as a criminal.
That is the contradiction.
A mature country should be capable of recognising that cannabis carries risks without pretending prohibition has removed it from society. It should be possible to discourage harmful use without damaging people’s lives for personal possession.
The question is no longer whether cannabis is entirely safe. It is not.
The question is whether criminalisation makes Britain safer, healthier or fairer.
Increasingly, the evidence—and common sense—suggest that it does not.