How Medical Cannabis Returned to the UK

"Two families, sitting in front of television cameras, did in eighteen months what twenty years of policy briefings had failed to do."

For almost half a century after the Misuse of Drugs Act 1971, cannabis was, in the eyes of UK law, a substance with no recognised medical use. That changed, in practical terms, in late 2018. This article is a plain-language account of how the change happened and what it means now. It is not legal or medical advice.

The political backdrop

Medical cannabis had been on the edge of UK policy debate for years. Academic clinicians, patient groups and a small number of MPs had argued for some form of legal access since at least the late 1990s. Successive governments had declined to move, citing the absence of large-scale clinical evidence and the international treaty framework around controlled drugs.

Two cases that changed the conversation

In the spring and summer of 2018, the cases of two children — Alfie Dingley and Billy Caldwell — became national news. Both had severe, drug-resistant epilepsy. Both had responded dramatically to cannabis-based medicines obtained outside the UK. Both families found themselves blocked from continuing treatment at home.

The coverage was sustained, sympathetic and difficult to dismiss. Within months, the Home Office had granted specials licences for the children in question, the Chief Medical Officer had been asked to review the evidence, and the government had announced that cannabis-based products for medicinal use would be moved out of the most restrictive schedule of the Misuse of Drugs Regulations.

The 2018 rule change

On 1 November 2018, cannabis-based products for medicinal use became legally prescribable in the UK by specialist doctors on the General Medical Council's specialist register. The change did not legalise recreational cannabis. It did not authorise GPs to prescribe. It carved out a narrow legal route for consultant-led prescription of specific cannabis-based medicines, primarily where conventional treatments had failed.

What the system looks like in practice

In the years since, prescription has remained relatively rare on the NHS and has grown primarily in the private sector. A small but increasing number of private clinics now offer specialist consultations and, where clinically appropriate, prescribe cannabis-based medicines. Patient numbers are still modest compared with countries such as Germany, but they have grown year on year.

The legal route exists. It is not always easy to use, and the rules are technical enough that anyone considering it should speak to a qualified specialist rather than relying on internet summaries, including this one.

What this archive is not

This article is part of a historical and cultural archive. It is not medical advice. Haze Cartel sells legal smoking accessories. We do not sell cannabis, and we do not provide guidance on accessing it. Anyone considering medical cannabis should consult a GP or specialist clinician.

Where to go next

For the longer arc, read Cannabis as Medicine: A Short History. For the patient advocacy that ran alongside the political process, see Patients, Pioneers, and Public Pressure.