Officers from the Medicines and Healthcare products Regulatory Agency’s (MHRA) Criminal Enforcement Unit (CEU) have dismantled a large illicit manufacturing site producing and distributing unlicensed weight loss injections during a raid on a warehouse in Northampton.
It is the first illegal production site for weight loss medicines uncovered in the UK and is thought to represent the largest single seizure of trafficked weight loss products ever made by a law enforcement body worldwide.
During the raid, MHRA officers, supported by Northamptonshire Police, found tens of thousands of empty injection pens ready to be filled, raw chemical ingredients, and more than 2,000 unlicensed retatrutide and tirzepatide pens prepared for dispatch. The estimated street value of the finished products exceeds £250,000.
Officers also seized around £20,000 in cash suspected to be linked to the illegal trade, along with advanced packaging and manufacturing equipment.
The two-day operation forms part of the MHRA’s ongoing efforts to curb the illegal trade in weight loss medicines.
The warehouse, located on an industrial estate on the outskirts of Northampton, is believed to have been used for large-scale production, packaging, and distribution of unlicensed — and potentially dangerous — weight loss products.
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 by peddling dangerous and illegal weight loss jabs to make a quick buck.
“These unregulated products, made with no regard for safety or quality, posed a major risk to unwitting customers.
“My message is clear: don’t buy weight loss medications from unregulated sources. Talk to your GP, seek NHS advice, and don’t line the pockets of criminals who don’t care about your health. Safe, appropriate, licensed obesity drugs can greatly benefit those in need if taken under medical supervision, and I urge people to only purchase and use them with the approval and oversight of medics and pharmacists.”
Andy Morling, Head of the MHRA’s Criminal Enforcement Unit, said:
“This seizure shows the lengths these criminals will go to for profit. People should be extremely cautious when buying medicines online. Prescription medicines should only be obtained from a registered pharmacy against a prescription issued by a healthcare professional. Taking prescription medicines sourced in any other way carries serious risks to your health – there are no guarantees about what they contain, and some may even be contaminated with toxic substances.
“Taking out the first illicit weight loss medicine manufacturing facility found in the UK is a landmark result for the MHRA and a major blow to the illegal trade. These products are untested, unauthorised, and potentially deadly. 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. This operation demonstrates, once again, that my officers will stop at nothing to identify, disrupt, and dismantle the organised criminal networks who put profit before safety.”
The MHRA #FakeMeds website offers helpful guidance and advice for staying safe when buying medicines online.
Anyone who suspects they are having a side effect from a medicine are encouraged to talk to their doctor, pharmacist or nurse and report it directly to the MHRA Yellow Card scheme.
26.10.2025.
