UK Doctors Prescribe Medical Cannabis at Record Rates Across Private Clinics

A startling trend has emerged in the UK: just ten doctors are responsible for more than half of all medical cannabis prescriptions since legalization.

The numbers, obtained by The Times, show a single consultant alone issued nearly 46,000 prescriptions in just five months last year – that’s roughly one every two working minutes.

While cannabis was legalized for medicinal use in 2018, primarily after the high-profile case of epileptic child Billy Caldwell, private clinics have now become the main drivers of prescription growth.

These ten consultants, all working in private settings, have prescribed over 805,000 cannabis treatments since 2019, representing 52% of the total.

Explosion in Prescriptions and THC Potency

After a slow rollout, monthly prescriptions rose to 10,000 by mid-2022, then surged to 50,000 per month in early 2024, peaking at around 100,000 monthly in early 2025 before slightly declining.

Most patients are receiving prescriptions for psychiatric conditions such as depression, anxiety, and bipolar disorder.

However, the potency of these medical cannabis products raises concerns.

Some strains, like the infamous “Space Cake”, have a THC content of 34%, higher than typical street “skunk” (14–16% THC).

This high potency has coincided with alarming reports of addiction, mental health deterioration, and even suicides linked to misuse.

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One tragic case involved Oliver Robinson, 34, who became addicted after a single online consultation.

His £1,000-a-month prescription fueled an 18-month spiral ending in his death.

Private Clinics vs NHS: Risks and Controversy

While the NHS strictly regulates prescriptions for severe medical conditions, private clinics have faced criticism for offering cannabis to patients with no clear evidence of benefit.

Marketing claims suggest “you don’t need a serious condition” to get prescriptions, which experts like Professor Sir Robin Murray of King’s College London warn may be harmful.

A recent study in The Lancet Psychiatry, reviewing 54 trials over 45 years, found no evidence that medicinal cannabis helps anxiety, depression, or PTSD, though it may assist with epilepsy, chronic pain, and autism.

Despite this, private clinics continue to supply cannabis to mental health patients, with some offering free consultations or discounts for benefit claimants.

Rising Prescriptions and Public Health Concerns

Data from clinics like Mamedica shows 50.5% of their 12,000+ patients are prescribed cannabis for mental health conditions.

The total volume prescribed in the UK jumped from 2.7 million grams in 2022 to 9.8 million grams in 2024, with high-potency products (above 22% THC) accounting for nearly half of all prescriptions in early 2025.

The NHS warns that medicinal cannabis can cause hallucinations and suicidal thoughts, making careful monitoring essential.

Impact and Consequences

The rapid expansion of high-potency cannabis prescriptions has multiple implications:

• Mental health risks, including addiction, psychosis, and suicidal ideation.
• Ethical concerns over prescribing to patients without clear medical need.
• Increasing strain on healthcare providers managing side effects and dependency.
• Public scrutiny of private clinics’ marketing and oversight practices.

What’s Next?

Experts suggest tighter regulation and monitoring of private cannabis clinics, especially regarding:

• THC potency limits for mental health prescriptions.
• Mandatory evidence-based assessments before prescribing.
• Oversight of marketing practices targeting vulnerable populations.
• Research to clarify the efficacy and safety of medicinal cannabis for psychiatric conditions.

Summary

While medical cannabis has undeniable benefits for conditions like epilepsy and chronic pain, the UK is witnessing a troubling surge in high-potency prescriptions, largely driven by a small number of private doctors.

Mental health patients are particularly at risk, and experts urge more robust regulation and public awareness.

Bulleted Takeaways

• Ten doctors prescribed over half of all UK medical cannabis since legalization.
• One consultant issued 46,000 prescriptions in five months – one every two working minutes.
• High-potency strains like “Space Cake” (34% THC) exceed typical street skunk.
• Private clinics increasingly treat psychiatric conditions despite limited evidence.
• NHS warns of side effects, including hallucinations and suicidal thoughts.
• Experts call for stricter regulation, evidence-based prescribing, and oversight of private clinics.