Officers from the Medicines and Healthcare products Regulatory Agency’s (MHRA) Criminal Enforcement Unit have arrested two people after raiding a country estate near Northampton, recovering around 12,000 doses of unlicensed weight loss medicines in the largest ever seizure of such products by the agency.
During the operation, which was carried out last night (28 May 2026) with the support of Northamptonshire Police, two male suspects, both aged 29, were arrested on suspicion of offences under the Human Medicines Regulations 2012. Enquiries are ongoing.
The property is believed to have been used as a large-scale facility to manufacture, assemble, and distribute unlicensed weight loss medicines, including retatrutide and tirzepatide, as well as peptide products.
Officers seized substantial quantities of packaging materials and what are believed to be pharmaceutical substances used in the illicit manufacture of the products.
Andy Morling, Head of the MHRA’s Criminal Enforcement Unit, said
Last night’s hugely successful operation demonstrates, once again, the MHRA’s unwavering commitment to ensuring there is no hiding place for those who cynically put the public’s health at risk for profit. Medicines regulation isn’t discretionary – it exists to protect people.
That’s why we continue to target the traffickers who seek to bypass that protection – taking down the infrastructure that supports them and creating a hostile environment for their exploitative and harmful trade. In addition to disrupting an organised criminal group, I’m confident that dismantling this illicit production facility will have prevented significant public harm.
I’m enormously grateful to Northamptonshire Police for their support in this operation.
This operation is the latest in a series of successful enforcement actions by the MHRA targeting the illegal supply of weight loss medicines. Over recent months, the agency’s Criminal Enforcement Unit has carried out several raids, dismantling criminal networks, and removing significant quantities of unlicensed and potentially dangerous products from circulation.
The MHRA remains committed to pursuing those who seek to exploit public demand for these medicines and will continue to use the full range of its powers to protect the public.
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.
Notes to editors
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The Criminal Enforcement Unit (CEU) is the MHRA’s in-house law enforcement function, leading the agency’s response to medicines crime. Its strategic mission is to protect the public, maintain confidence in regulation and uphold the rule of law through preventing offending, disrupting criminal activity and bringing offenders to justice. It uses the full range of its powers and capabilities, including intelligence analysis, online disruption, covert techniques, and asset recovery to tackle criminal threats to the UK public, working closely with the police and law enforcement agencies in the UK and overseas.
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The MHRA is responsible for regulating all medicines and medical devices in the UK by ensuring they work and are acceptably safe. All our work is underpinned by robust and fact-based judgements to ensure that the benefits justify any risks.
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The MHRA is an executive agency of the Department of Health and Social Care.
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For media enquiries, please contact the newscentre@mhra.gov.uk, or call on 020 3080 7651.
