Ketamine is currently controlled as a Class B substance under the Misuse of Drugs Act 1971, putting it on par with cannabis and amphetamines.

The maximum penalties for production and supply of a Class B substance are 14 years’ imprisonment and/or an unlimited fine, while the maximum penalty for possession is up to five years’ imprisonment and/or a fine.

If reclassified as a Class A substance, along the likes of heroin, cocaine and LSD, the maximum penalties for production and supply would increase to life imprisonment and/or a fine, and the maximum penalty for possession would rise to seven years’ imprisonment and/or a fine.

Dame Diana Johnson, the UK government’s policing minister, is to write to the Advisory Council on the Misuse of Drugs (ACMD) to commission advice on ketamine and to consider whether it should remain controlled as a Class B substance or become a Class A drug.

The Home Office has a statutory duty to consult the ACMD under the 1971 Act before any amendments to legislation are made.

Dame Diana said: “Ketamine is an extremely dangerous substance and the recent rise in its use is deeply concerning. 

“Through our ‘plan for change’ and mission to make the nation’s streets safer, we will work across health, policing and wider public services to drive down drug use and stop those who profit from its supply.

“It is vital we are responding to all the latest evidence and advice to ensure people’s safety and we will carefully consider the ACMD’s recommendations before making any decision.”