The Home Office “would not stand in the way” of drug testing at clubs and festivals, it said.
It follows calls from experts and campaigners for music events to provide the service after two people died and 13 others were hospitalised at Hampshire’s Mutiny festival.
Eleven people have died at festivals in the last two years even though drug use is not increasing, suggesting that illegal substances now have higher levels of toxicity.
Currently, drug testing facilities are offered at an extremely limited number of nightclubs and festivals by The Loop, a charity and the sole provider of such services.
Policing minister Nick Hurd said the Home Office was not standing in the way of what he called “local operating decisions”.
He said: “The fact that chief constables in Avon, Cumbria, Somerset and Hampshire have stepped forward and said ... we do want to cooperate with this, sends a strong signal.”
He added that he had spoken personally to Avon and Somerset Police Constable Andy Marsh and he was “very clear that this is the right thing to do and that he is very confident about his legal position in doing so”.
The proof of this was that a number of festivals are already using the testing facilities, he said, adding that he would be checking whether police forces were correctly informed.
Labour MP Thangam Debbonaire, who brought the debate to the House of Commons last week, said: “Giving everyone clear information about the substances they intend to consume helps reduce risk and prevent harm – we can do it for alcohol and we can do it for other drugs within the current legal frameworks.
“Clarity from the government is a win, but we can go even further. Let’s make it a requirement that festivals and, if possible, nightclubs, have to ensure there is drug safety testing available for every event they run. I will be holding the minister to this commitment. Let’s save more lives and protect more people from harm."