Two of Britain’s biggest clubs have announced they will host on-site drug testing for the first time.

Charity The Loop will operate at Drumsheds in London and the Warehouse Project in Manchester, checking any substances seized or surrendered.

If testers find something potentially dangerous — stronger than usual, contaminated or sold as something it’s not — they’ll warn clubbers.

The Loop’s CEO Katy Porter told BBC Newsbeat that she does not support drug use, but accurate information can save lives if people choose to use it.

The charity has been mainly trialled at summer music festivals since 2013, but has received permission from the government to trial at both venues.

Katy says being able to test year-round allows The Loop to monitor trends in the “ever-changing” drug market more accurately.

“Every time we test, we get real-time information,” she says.

“So if we have a break in that, we have some delay in terms of understanding.”

Katy says an example of these trends came over the summer, when one in ten MDMA pills tested contained 200 milligrams — a much higher strength than normal.

Katy says more recent tests have seen the frequency rise to one in four pills.

“This poses a risk to people if they think they might take something with a lower strength and it turns out to be much stronger than they think it is,” she says.

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The charity will carry out ‘back of house’ tests out of public view, as opposed to ‘front of house’ tests where people can take drugs to be tested.

Drug testing is widely supported by event organizers and authorities as part of an approach known as harm reduction.

They will take steps to keep drugs out of places and arrest anyone supplying drugs, but most accept that it is impossible to stop people taking them completely.

Harm reduction seeks to make people aware of the risks and warn them of any unusual or dangerous substances in circulation.

Drumsheds’ Sam Spencer said testing at the venue was a “significant move” to keep the public safe.

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