Recreational use is not permitted: to answer the question directly, weed is not legal in Wales. Cannabis is a Class B controlled drug under the Misuse of Drugs Act 1971, and Wales follows the same drug laws as England, so possession, supply, and cultivation carry the same penalties on both sides of the border.1GOV.UK. The Classification of Cannabis Under the Misuse of Drugs Act 1971 There are two narrow lawful routes: a specialist prescription for medical cannabis, available since 1 November 2018, and certain CBD products that meet strict limits on controlled cannabinoid content.
What Happens If You’re Caught With Cannabis
The response from police depends on how much you have, whether you admit the offence, and whether you’ve been caught before. The outcomes sit on a scale.
A small amount for personal use, with an admission, can be dealt with by a cannabis warning. It is recorded on the Police National Computer but is not a criminal conviction, and generally only one such warning is given to any individual.2Sentencing Council. Cannabis or Khat Warning A warning won’t appear on a standard DBS check. It can in theory show up in the “other relevant information” section of an enhanced DBS check, but only if the offence is considered relevant to the role.3Unlock. Cannabis Warning
A second offence usually means a Penalty Notice for Disorder, with a fine of up to £90.4GOV.UK. Drugs Penalties Ignore the PND and it escalates to a court fine and a criminal record.
Beyond that, or where the quantity, context, or history is more serious, you can be arrested and prosecuted. The statutory maximum for possessing a Class B drug on indictment is five years’ imprisonment, an unlimited fine, or both. In a magistrates’ court the ceiling is three months and a fine of up to £2,500. Most first-time cases that reach court come in well below those limits, but a conviction follows you into employment, insurance, and travel for years.
Growing or Sharing Cannabis
Production and supply are treated far more severely than possession, and “supply” is wider than people expect. Handing cannabis to a friend for nothing counts. The maximum sentence for producing or supplying a Class B drug is 14 years’ imprisonment, an unlimited fine, or both.4GOV.UK. Drugs Penalties
For cultivation specifically, the Sentencing Council sorts cases by scale. Seven or fewer plants falls into the lowest category, often treated as personal-use cultivation, though a prison sentence is still possible. Around 20 plants is presumed to go beyond personal use, with courts assuming an average yield of 55 grams per plant when calculating output. Larger grows attract commercial-scale sentencing.5Sentencing Council. Production of a Controlled Drug / Cultivation of Cannabis Plant Plant counts are starting points, not rigid cutoffs: a grow of six plants alongside commercial packaging and scales can be treated more seriously than the numbers alone suggest.
Medical Cannabis in Wales
Since 1 November 2018, specialist doctors have been able to prescribe cannabis-based medicines to patients whose conditions have not responded to other treatments.6GOV.UK. Government Announces That Medicinal Cannabis Is Legal Prescriptions can only be written by clinicians on the General Medical Council’s Specialist Register, working in fields such as neurology, paediatrics, pain management, or psychiatry. A GP cannot prescribe cannabis, and each case has to be assessed individually.
NHS Access Is Very Narrow
Three licensed cannabis-based medicines are routinely available on the NHS, each tied to specific conditions. Epidyolex, a cannabidiol product, is approved for seizures in rare forms of epilepsy including Lennox-Gastaut syndrome and Dravet syndrome, and for tuberous sclerosis complex. Nabilone is used for chemotherapy-induced nausea and vomiting when other anti-sickness drugs have failed. Sativex is prescribed for muscle spasticity in adults with multiple sclerosis who have not responded to other treatments. Outside those categories, NHS prescriptions for cannabis-based medicines are extremely rare, and most patients in Wales access medical cannabis through private clinics.7House of Commons Library. Medical Use of Cannabis
What Private Treatment Costs
Nothing in the private route is covered by the NHS. Consultation fees typically start around £30 for initial and follow-up appointments. Cannabis flower prescriptions run from roughly £5.50 per gram, with most patients spending between £150 and £200 a month depending on dosage and product. Cannabis oils run from about £70 to over £150 per bottle. A medical-grade vaporiser, the standard prescribed method of consumption, is a one-off purchase of £250 to £350. Figures vary between clinics and shift as the market develops.
Driving After Cannabis Use
Section 5A of the Road Traffic Act 1988 makes it an offence to drive with a blood THC concentration above 2 micrograms per litre.8Legislation.gov.uk. Road Traffic Act 1988 Section 5A That limit sits close to zero by design. THC can remain detectable in blood long after any impairment has gone, so regular users risk failing a roadside test the morning after use, not just immediately after.
A conviction brings a minimum 12-month driving ban, an unlimited fine, and up to six months in prison.9GOV.UK. Drugs and Driving: the Law A second offence within ten years raises the minimum ban to three years. Causing death by careless driving while under the influence of drugs carries a maximum of life imprisonment. Insurance premiums climb sharply, and the conviction stays on your criminal record.
Prescribed patients have a statutory medical defence under Section 5A(3) if they go over the THC limit. Three conditions have to be met: the cannabis was prescribed by a registered clinician, you took it according to the prescriber’s and manufacturer’s instructions, and your possession was lawful immediately before use. Topping up a prescription with street cannabis destroys the defence, and so does smoking a product the prescription says must be vaporised. The defence also covers only the “over the limit” offence. If police can show actual impairment, through lane drifting or slow reactions for example, Section 4 of the Road Traffic Act 1988 applies and has no medical exemption.
Buying CBD Products
CBD products are sold legally in Wales through pharmacies, high-street shops, and online retailers, but the legality depends on what the product actually contains, not what the label says.
Under the Misuse of Drugs Act 1971 and its regulations, a CBD product can be sold as an exempt product only if no single component part contains more than one milligram of any controlled cannabinoid, measured per container rather than per dose.10GOV.UK. Guidance on Analytical Limits for Controlled Cannabinoids Anything above that threshold is legally a controlled substance, regardless of marketing. The widely quoted “0.2% THC” figure refers to the permitted THC level in industrial hemp crops, not to finished CBD products on shop shelves.
For CBD foods and drinks, including oils, gummies, and capsules, there is a second layer of control. The Food Standards Agency treats CBD as a novel food, so products must be linked to a valid novel food application and appear on the FSA’s public list; items that are not listed should be removed from sale.11Food Standards Agency. CBD Products Linked to Novel Food Applications The FSA’s recommended safe upper limit for THC intake is 0.07 milligrams per day, far below the 1mg-per-container threshold that governs legal sale.12Food Standards Agency. Food Standards Agency Updates Guidance Allowing CBD Businesses to Reformulate Products on the Public List for Safety Reasons Legal to sell and safe at any dose are different questions.
Medical Cannabis and Your Job
If you hold a valid cannabis prescription and your underlying condition qualifies as a disability under the Equality Act 2010, your employer has a legal duty to consider reasonable adjustments. The Act defines disability as a physical or mental impairment with a substantial and long-term adverse effect on your ability to carry out normal day-to-day activities, and many chronic pain, neurological, and psychiatric conditions that lead to a cannabis prescription meet that test.
Reasonable adjustments might include allowing prescribed medication at work, adjusting break schedules, or modifying a drug testing policy to recognise a lawful prescription. There is no blanket right to use medical cannabis at work. Whether a specific adjustment is reasonable depends on the role, safety implications, and operational impact, and only an Employment Tribunal can definitively rule on whether someone is disabled under the Act and whether an employer’s response was lawful.
Workplace drug testing is where this gets difficult. Many employers in safety-critical industries have zero-tolerance policies that predate the 2018 change to the law. If your role involves driving, operating machinery, or working at height, an employer may argue that cannabis use creates an unacceptable safety risk. Disclosing a prescription to occupational health early, rather than after a failed test, gives you the strongest position.