The classification of drugs in the UK is set by the Misuse of Drugs Act 1971, which sorts controlled substances into three classes, A, B and C, according to how harmful Parliament judged them to be. The class a drug sits in determines the maximum sentence a court can impose, and nothing else. It does not tell you how dangerous the drug is in practice, it does not tell you whether a doctor can prescribe it, and in the case of anabolic steroids it does not even tell you whether simple possession is an offence at all.
That last point is where almost every article on this subject goes wrong, and it is the reason we wrote this one. If you have arrived here because you want to know where steroids sit, the short answer is Class C with an unusual exemption, and the longer answer is below.
What this guide covers
- How UK drug classification actually works
- Class A drugs and their penalties
- Class B drugs and their penalties
- Class C drugs, and where anabolic steroids sit
- The three classes side by side
- Possession against supply, the distinction that matters
- Schedules are not classes, and why that trips people up
- Temporary class drugs and the psychoactive substances ban
- What this means if you use anabolic steroids
- What actually happens in practice
- Scotland and Northern Ireland
- Sport, work and testing
- Common questions
How UK drug classification actually works
The Misuse of Drugs Act 1971 created a single list of controlled drugs and split it into three classes. Class A carries the heaviest maximum penalties, Class C the lightest. The Advisory Council on the Misuse of Drugs recommends where a substance should sit, ministers decide, and Parliament makes the change by order.
Two things follow from that structure and both are frequently misunderstood. First, classification is a sentencing framework rather than a risk score. Alcohol and tobacco cause enormous measurable harm and are not controlled under the Act at all, while some Class A drugs are prescribed daily in hospitals. Second, the maximum sentence is a ceiling, not a starting point. Sentencing Council guidelines, the quantity involved, the role played and previous convictions all shape what a court actually hands down.
A drug can also move. Ketamine was Class C until 2014 and is now Class B. GHB and GBL moved from Class C to Class B in April 2022. Pregabalin and gabapentin became Class C in 2019. Classification reflects a political and scientific judgement at a point in time, which is why any article quoting the law should tell you when it was checked.
Class A drugs and their penalties
Class A covers the substances Parliament treats most seriously. It includes heroin, cocaine and crack cocaine, MDMA, LSD, methadone, methamphetamine and magic mushrooms when prepared for use.
Possession of a Class A drug carries a maximum of seven years imprisonment, an unlimited fine, or both. Supply, offering to supply and production carry a maximum of life imprisonment and an unlimited fine. Importation is dealt with separately under customs legislation and also carries life as a maximum.
Class B drugs and their penalties
Class B includes cannabis, ketamine, amphetamine, codeine, synthetic cannabinoids, barbiturates, and GHB and GBL, which were moved up from Class C in April 2022.
Possession carries a maximum of five years and an unlimited fine. Supply and production carry a maximum of fourteen years and an unlimited fine. A Class B drug prepared for injection is treated as Class A, which catches amphetamine prepared that way.
Class C drugs, and where anabolic steroids sit
Class C includes anabolic steroids, benzodiazepines such as diazepam, khat, and since 2019 pregabalin and gabapentin.
Possession of a Class C drug carries a maximum of two years and an unlimited fine. Supply and production carry a maximum of fourteen years, the same ceiling as Class B, which surprises people who assume the classes scale evenly. They do not. The gap between the classes is much wider for possession than it is for supply.
Anabolic steroids then get treated differently again, and that exemption is covered in full in our guide on whether steroids are legal in the UK.
The three classes side by side
| Class | Examples | Maximum for possession | Maximum for supply |
|---|---|---|---|
| A | Heroin, cocaine, MDMA, LSD, methadone, magic mushrooms | 7 years and an unlimited fine | Life and an unlimited fine |
| B | Cannabis, ketamine, amphetamine, codeine, GHB | 5 years and an unlimited fine | 14 years and an unlimited fine |
| C | Anabolic steroids, diazepam, khat, pregabalin, gabapentin | 2 years and an unlimited fine | 14 years and an unlimited fine |
Read the supply column again. A Class C offence and a Class B offence carry the same fourteen year ceiling. The classification of drugs in the UK compresses sharply once you move from having something to passing it on.
Possession against supply, the distinction that matters
Supply does not mean dealing for profit. Under the Act, giving a drug to a friend is supply. Splitting an order and passing part of it on is supply. Holding someone else’s stock is possession with intent to supply if the circumstances suggest onward distribution, and quantity, packaging, messages on your phone and cash all feed that inference.
This matters enormously for anabolic steroids, because the exemption that protects personal possession offers no protection at all the moment you hand any of it to a training partner. The person who believes they are doing a favour is, in law, in exactly the same position as someone selling.
Schedules are not classes, and why that trips people up
Alongside the classes there is a second system almost nobody explains. The Misuse of Drugs Regulations 2001 place controlled drugs into five schedules, and the schedule governs medical and pharmacy handling rather than criminal penalty.
- Schedule 1 covers drugs with no recognised medical use, held only under Home Office licence, for example raw cannabis and LSD.
- Schedule 2 covers drugs with medical use and strict storage and record requirements, for example morphine, methadone and cocaine.
- Schedule 3 covers drugs with lighter record requirements, for example buprenorphine and temazepam.
- Schedule 4 is split. Part I holds most benzodiazepines. Part II holds anabolic steroids and growth hormone.
- Schedule 5 covers low strength preparations that can be sold over the counter.
The Schedule 4 Part II placement is precisely why anabolic steroids behave unlike other Class C drugs. Medicinal form, in your possession, for your own use, is not a possession offence. Change any of those three conditions and the protection falls away.
Temporary class drugs and the psychoactive substances ban
A third route exists. Ministers can issue a temporary class drug order lasting twelve months while the Advisory Council assesses a new substance. Possession of a temporary class drug is not an offence, but supply and production are.
Separately, the Psychoactive Substances Act 2016 banned the production, supply and importation of psychoactive substances not already controlled, which closed the former head shop trade. Possession for personal use is again not an offence outside custodial institutions. Between them these two routes catch most of what used to be sold as legal highs.
What this means if you use anabolic steroids
Read together, the position is narrow and specific. Anabolic steroids are Class C. They are Schedule 4 Part II, so possession in medicinal form for personal use is not an offence. Supply, offering to supply, production and importing with intent to supply all carry up to fourteen years and an unlimited fine. Importing for personal use by post sits in a grey area that has produced convictions, and buying from an overseas website is importation.
None of that is a recommendation. If you want the evidence on what these compounds actually do to the body, our guides on steroid side effects and coming off steroids cover it without either the scare stories or the denial. If you are considering the legal prescribed route instead, how TRT works in the UK explains what a clinic can and cannot do.
Everything we sell is a legal food supplement. You can see the full range in the shop, and the ranges we stand behind most are creatine and protein, both with the dose printed in full on every product page. The rest of the library sits in the guides.
What actually happens in practice
Maximum sentences make headlines and rarely describe outcomes. For simple possession of a Class B or Class C drug, a first offence far more often results in a warning, a community resolution or a caution than a court appearance. Police forces in England and Wales also operate diversion schemes that route people into education or treatment instead of prosecution.
Where a case does reach court, sentencing follows Sentencing Council guidelines rather than the statutory ceiling. Those guidelines weigh the quantity, the role played, whether the activity was commercial, whether vulnerable people were involved and what the defendant has done since. A courier at the bottom of a chain and an organiser at the top face very different starting points for the same offence on paper.
The practical lesson is that the class sets the outer limit while the facts set the sentence. It is also why the possession exemption for anabolic steroids is worth understanding precisely. It is not a general licence, it is a narrow carve out, and stepping outside it moves you into a fourteen year bracket rather than a two year one.
Scotland and Northern Ireland
The Misuse of Drugs Act 1971 applies across the whole United Kingdom, so the three classes and the maximum penalties are the same in Edinburgh, Belfast and London. What differs is prosecution policy and the surrounding system.
In Scotland the Crown Office and Procurator Fiscal Service decides prosecutions and has expanded the use of recorded police warnings for simple possession. Scotland also has its own drug death and harm reduction strategy, which has driven a different approach to services on the ground. Northern Ireland has its own prosecution service and its own sentencing guidance. The statute is shared, the experience is not identical.
Sport, work and testing
Legality and eligibility are separate questions, and conflating them causes real damage. Anabolic agents are on the World Anti Doping Agency prohibited list at all times, in and out of competition. A substance being legal to possess in the UK has no bearing on whether it will end a competitive career, and neither does a doctor having prescribed it unless a therapeutic use exemption is in place beforehand.
Employment testing is different again. There is no general right for a UK employer to test staff for drugs, but safety critical roles routinely include testing in the contract, and testosterone is not usually on a standard workplace panel while cannabis and cocaine metabolites are. If you compete under a governing body or work in a tested role, check that body’s rules rather than the Misuse of Drugs Act.
Common questions
How many drug classes are there in the UK?
Three. Class A, Class B and Class C, set by the Misuse of Drugs Act 1971. A separate temporary class drug order can be used for twelve months while a new substance is assessed.
Which class are anabolic steroids in the UK?
Class C. They are also Schedule 4 Part II of the Misuse of Drugs Regulations 2001, which is why possession in medicinal form for personal use is not an offence while supply carries up to fourteen years.
Is Class C the least serious class?
For possession, yes, with a two year maximum against seven years for Class A. For supply the picture changes, because Class B and Class C share the same fourteen year maximum.
Can a drug change class?
Yes. Ketamine moved from Class C to Class B in 2014, and pregabalin and gabapentin became Class C in 2019. Classification reflects advice and policy at a moment in time.
Does classification tell me how dangerous a drug is?
No. It sets maximum sentences. Alcohol and tobacco are not controlled under the Act despite causing very large measurable harm, and several Class A drugs are used in hospitals every day.
Is giving a drug to a friend really supply?
Yes. Supply under the Act does not require payment or profit. Passing any quantity to another person is supply, and it carries the supply penalty for that class.
Sources
The primary source is the Misuse of Drugs Act 1971 and the Misuse of Drugs Regulations 2001. Penalty summaries are published by GOV.UK. For confidential, non judgemental information about drugs, TALK TO FRANK is the national service.
This page explains the law as it stood when it was last checked. It is information, not legal advice, and if you are facing a charge you should speak to a solicitor.