The UK has the highest proportion of heroin users in Europe, with more than 330,000 people taking opioids of some kind. As heroin-related deaths rise to their highest level for 20 years, five users give a shocking no-holds-barred view into one of the most controversial drugs of all.
The UK is the fourth highest consumer of cocaine in the world. On a Friday night, Mason and Rachel start the weekend with a bag of coke. Siblings Mark and Julie are both users, with Julie's marriage on the brink as a consequence.
Low prices and the popularity of powdered ecstasy, or MDMA, have sparked a surge in one of the nation's favourite party drugs. Ashley, a 20-year-old labourer, has a carefully worked-out strategy of how to hit the perfect high. Julie and Heather go clubbing with ecstasy purchased online from a trusted supplier. But Kevin and Lucy offer harrowing stories of their own former heavy drug use.