In the first of our landmark new series looking at drug use across Britain, we explore a legal high ‘epidemic’ in Wolverhampton. Following 27 year old Liam over three months in his battle to quit the synthetic cannabinoid “Black Mamba”. Legal Highs are set to be outlawed by the British government in April. The ban comes as a response to the increasing use of synthetic drugs across the streets of Britain.

In the second episode of Drugs Map of Britain, we meet a group of men who use violence to deal with, what they say, is the growing heroin problem in their area. Every week, they collect discarded needles and believe those responsible must be punished. But how do they justify their actions and why do heroin addicts, in particular, face so much prejudice and stigma?

In the third episode of Drugs Map of Britain, we investigate Valium addiction in Scotland, where three quarters of drug related deaths involve this type of drug. Millions of the pills- both real and counterfeit- are available to buy on the streets for as little as 20p each. We meet those buying them and witness the devastating effects of addiction for someone like Levi, who’s been taking Valium since he was 13. Has the widely prescribed ‘mother’s little helper’ become Scotland’s silent killer?

Meeting seriously ill people who believe cannabis is curing them. But by resorting to this illegal and unregulated drug, what risks are they all taking?

According to the NHS, towns like Swansea have seen a recent spike in injecting-related injuries, resulting in abscesses, open wounds and in some cases even amputations. Following a number of individuals, this episode of Drugs Map of Britain explores the very stark reality of addiction and the physical and psychological fall-out years of injecting can cause.

In this episode of Drugs Map of Britain we meet students born in the 90s who call themselves The Children of Ecstasy.Once associated with rave culture, students like Marc are now using ecstasy and MDMA to help them socialise, and open up to their friends. But, with the pills and crystal stronger than ever, what risks are they taking in search of a great night out?

London’s intake of this country's most harmful drug is boosted in December when British people drink 41% more alcohol than other months of the year. We follow Garry, whose future depends on kicking his alcohol addiction, and 25 year-old Nathaniel, who delivers alcohol after hours to some of London’s richest residents, and discover how young, drunk revellers are comforted by OAPs like 71 year old Katie.

Director Adam Patterson follows the lives of young people in Northern Ireland who are abusing prescription medication.

Fentanyl is on the rise in the UK: it's 50 times stronger than heroin and is the drug linked to the death of rock star Prince - but what is the reality of those addicted? In this episode of Drugs Map Of Britain, BBC Three explores the effect this drug has in Hull.