The first illicit production facility for weight loss medicine found in the UK has been dismantled.

The discovery, in Northampton, led to the largest single seizure of trafficked weight loss drugs ever recorded by a law enforcement agency worldwide, the Medicines and Healthcare Products Regulatory Agency (MHRA) said.

It said it seized tens of thousands of empty weight loss pens ready to be filled, raw chemical ingredients and more than 2,000 unlicensed Retatrutide and Tirzepatide pens due to be sent to customers.

Secretary of State for Health and Social Care, Wes Streeting, said: “This is a victory in the fight against the shameless criminals who are putting lives at risk.

“Don’t line the pockets of criminals who don’t care about your health.”

The haul was estimated to be worth more than £250,000.

Alongside Northamptonshire Police, MHRA officers also found £20,000 in cash, suspected to be linked to medicines trafficking, and large amounts of sophisticated packaging and manufacturing equipment.

Andy Morling, head of MHRA’s criminal enforcement unit, said people should be “extremely cautious” when buying medicines online and only get them from a registered pharmacy.

“These products are untested, unauthorised and potentially deadly,” he said.

“By taking this organised criminal network out of operation and stopping tens of thousands of potentially fatal products from entering circulation, we’ve prevented a serious risk to public health.

“This is an illicit global market that endangers patients, puts big money in the pockets of organised criminals, and undermines legitimate healthcare.”