The “war on drugs” has failed in terms of public health and drug use should be decriminalised, two leading organisations have said.

The Royal Society for Public Health (RSPH) and the Faculty of Public Health (FPH) said the personal possession and use of all illegal drugs should no longer be considered a criminal offence.

While the bodies still support criminal charges for people who deal drugs, they said users should instead be referred for treatment and help.

The recommendation is made in a new UK-wide report, Taking a New Line on Drugs, which has the backing of several charities and law enforcement officials.

It is accompanied by a poll of more than 2,000 adults which found 56 per cent agreed drug users should be referred for treatment instead of facing charges.

The report calls for evidence-based drugs education for young people in schools as part of personal, social, health and economic (PSHE) education.

It also said the responsibility for a drugs strategy should be moved from the Home Office to the Department of Health.

Criminalising users leads to long-term harm such as greater exposure to drugs in prison, it argued. Furthermore, family relationships are severely harmed and people face exclusion from education and employment.

Shirley Cramer, chief executive of the RSPH, said: “For too long, UK and global drugs strategies have pursued reductions in drug use as an end in itself, failing to recognise that harsh criminal sanctions have pushed vulnerable people in need of treatment to the margins of society, driving up harm to health and wellbeing even as overall use falls.

“On many levels, in terms of the public's health, the 'war on drugs' has failed. The time has come for a new approach, where we recognise that drug use is a health issue, not a criminal justice issue, and that those who misuse drugs are in need of treatment and support - not criminals in need of punishment.”

Professor John Middleton, president of the FPH, said: “Criminalisation and incarceration for minor, non-violent offences worsen problems linked to illicit drug use, such as social inequality, violence and infection. Possession and use should be decriminalised and health approaches prioritised.”

World's 10 deadliest street drugs Show all 10 1 /10 World's 10 deadliest street drugs World's 10 deadliest street drugs Whoonga Whoonga is a combination of antiretroviral drugs, used to treat HIV, and various cutting agents such as detergents and poisons. The drug is widely available in South Africa due to South Africa’s high rate of HIV sufferers, and is believed to be popular due to how cheap it is when compared to prescribed antiretrovirals. The drug is highly addictive and can cause major health issues such as internal bleeding, stomach ulcers and ultimately death Getty World's 10 deadliest street drugs Scopolamine Scopolamine is a derivative from the nightshade plant found in the Northern Indian region of South America (Ecuador, Colombia and Venezuela). It is generally found in a refined powder form, but can also be found as a tea. The drug is more often used by criminals due its high toxicity level (one gram is believed to be able to kill up to 20 people) making it a strong poison. However, it is also believed that the drug is blown into the faces of unexpecting victims, later causing them to lose all sense of self-control and becoming incapable of forming memories during the time they are under the influence of the drug. This tactic has reportedly been used by gangs in Colombia where there have been reports of people using scopolamine as way to convince victims to rob their own homes World's 10 deadliest street drugs Heroin Founded in 1874 by C. R. Alder Wright, heroin is one of the world’s oldest drugs. Originally it was prescribed as a strong painkiller used to treat chronic pain and physical trauma. However in 1971 it was made illegal under the Misuse of Drugs Act. Since then it has become one of the most destructive substances in the world, tearing apart communities and destroying families. The side effects of heroin include inflammation of the gums, cold sweats, a weak immune system, muscular weakness and insomnia. It can also damage blood vessels which can later cause gangrene if left untreated World's 10 deadliest street drugs Crack cocaine Crack cocaine first came about in the 1980’s when cocaine became a widespread commodity within the drug trafficking world. Originally cocaine would have attracted a high price tag due to its rarity and difficulty to produce, but once it became more widespread the price dropped significantly. This resulted in drug dealers forming their cocaine into rock like shapes by using baking soda as a way of distilling the powder down into rock form. People were doing this because it allowed for them to sell cocaine at a lower quantity and to a higher number of people. The side effects of crack cocaine include liver, kidney and lung damage, as well as permanent damage to blood vessels, which can often lead to heart attacks, strokes, and ultimately death World's 10 deadliest street drugs Crystal meth Not just famous because of a certain Walter H White, but also because it is one of the most destructive drugs in the world. First developed in 1887, it became widely used during the Second World War when both sides would give it to their troops to keep them awake. It is also believed that the Japanese gave it to their Kamikaze pilots before their suicide missions. After the war crystal meth was prescribed as a diet aid and remained legal until the 1970s. Since then it has fallen into the hands of Mexican gangs and has become a worldwide phenomenon, spreading throughout Europe and Asia. The effects of crystal meth are devastating. In the short-term users will become sleep depraved and anxious, and in the long-term it will cause their flesh to sink, as well as brain damage and damage of the blood vessels World's 10 deadliest street drugs AH-7921 AH-7921 is a synthetic opioid that was previously available to legally purchase online from vendors until it became a Class A in January 2015. The drug is believed to have 80% of the potency of morphine, and became known as the ‘legal heroin’. While there has only been one death related to AH-7921 in the UK, it is believed to be highly dangerous and capable of causing respiratory arrest and gangrene World's 10 deadliest street drugs Flakka Flakka is a stimulant with a similar chemical make-up to the amphetamine-like drug found in bath salts. While the drug was originally marketed as a legal high alternative to ecstasy, the effects are significantly different. The user will feel an elevated heart rate, enhanced emotions, and, if enough is digested, strong hallucinations. The drug can cause permanent psychological damage due to it affecting the mood regulating neurons that keep the mind’s serotonin and dopamine in check, as well as possibly causing heart failure World's 10 deadliest street drugs Bath salts Bath salts are a synthetic crystalline drug that is prevalent in the US. While they may sound harmless, they certainly aren’t the sort of salts you drop into a warm bath when having a relaxing night in, they are most similar to mephedrone, and have recently been featured throughout social media due to the ‘zombification’ of its. The name comes from the fact that the drug was originally sold online, and widely disguised as bath salts. The side effects include unusual psychiatric behaviour, psychosis, panic attacks and violent behaviour, as well as the possibility of a heart attack and an elevated body temperature World's 10 deadliest street drugs Purple Drank One of the more unusual drugs around at the moment, purple drank was popularised in 90s hip hop culture, with the likes of Jay Z and Big Moe all mentioning it in their songs. It is a concoction of soda water, sweets and cold medicine, and is drunk due to cold medicines high codeine content, which gives the user a woozy feeling. However it can also cause respiratory issues and heart failure World's 10 deadliest street drugs Krokodil Krokodil is Russia’s secret addiction. It is believed that over one million Russians are addicted to the drug. Users of krokodil are attracted to the drug due to its low price; it is sold at £20 a gram while heroin is sold for £60. However, krokodil is considered more dangerous than heroin because it is often homemade, with ingredients including painkillers, iodine, lighter fluid and industrial cleaning agents. This chemical make-up makes the drug highly dangerous and likely to cause gangrene, and eventually rotting of the flesh

Baroness Molly Meacher, speaking on behalf of the All-Party Parliamentary Group for Drug Policy Reform, welcomed the report, adding that the current system “criminalises some users of psychoactive drugs whilst very harmful psychoactive drugs including alcohol and tobacco remain legal”.

Ron Hogg, police and crime commissioner for Durham Constabulary, who recently wrote to his counterparts across the country to encourage them to follow his force's approach of not prosecuting cannabis users, said: “I believe that vulnerable people should be supported to change their lifestyles and break their habits rather than face criminal prosecution, at great expense to themselves and to society.

“The scant resources of the police and the courts are better used tackling the causes of the greatest harm - like the organised crime gangs that keep drugs on our streets and cause misery to thousands of people - rather than giving priority to arresting low-level users.”