£2 Million Weight-Loss Pen Scandal: More Than 12,000 Fake Injections Seized in Birmingham Raid

British authorities have seized counterfeit weight-loss medicines estimated to be worth £2 million following a raid on an industrial unit in Birmingham.

The operation, carried out on October 14 by the Medicines and Healthcare products Regulatory Agency (MHRA) and West Midlands Police, uncovered more than 12,000 fake pens labelled as retatrutide and tirzepatide. Investigators also recovered packaging materials capable of being used for approximately 30,000 additional products.

The seizure forms part of an ongoing effort to disrupt the illegal supply and production of unauthorised weight-loss medicines in the United Kingdom.

MHRA Warns Fake Medicines Could Contain Dangerous Substances

Tim Duffield, Head of Intelligence at the MHRA’s Criminal Enforcement Unit, said the agency was targeting organised criminal groups involved in the illegal medicines trade.

He described the conditions at the Birmingham premises as filthy and warned that the seized products had not undergone the necessary checks to establish their safety, quality or effectiveness.

According to Duffield, there is no reliable guarantee of what counterfeit medicines contain or whether they have been contaminated with potentially harmful substances.

He urged members of the public to avoid purchasing weight-loss treatments from unregulated sellers, warning that unauthorised products could expose consumers to serious health risks.

Retatrutide Products Sold Outside Clinical Trials Are Illegal in the UK

The MHRA also highlighted concerns surrounding products marketed as retatrutide, a medicine that has not been authorised for use in the UK.

The agency warned that retatrutide products being supplied outside legitimate clinical trials are being sold illegally and could pose a threat to public health.

People considering treatment with glucagon-like peptide-1 (GLP-1) medicines are advised to consult a healthcare professional and obtain prescribed treatments only through registered pharmacies.

The guidance is intended to reduce the risks associated with counterfeit medicines and products purchased from sellers operating outside the regulated healthcare system.

Previous Raids Uncovered Thousands of Unlicensed Weight-Loss Medicines

The Birmingham operation follows several enforcement actions by the MHRA targeting suspected illegal weight-loss medicine manufacturing and distribution networks.

In May 2026, two people were arrested after investigators raided a country estate suspected of being used to manufacture, assemble and distribute unlicensed weight-loss medicines. Officers recovered approximately 12,000 doses, along with packaging materials and substances suspected of being pharmaceutical ingredients.

In February 2026, another operation resulted in the seizure of around 2,000 doses of unauthorised weight-loss medicines that were awaiting dispatch. Investigators also found manufacturing equipment, suspected pharmaceutical ingredients, packaging materials and commercial vehicles.

Earlier, in October 2025, the MHRA dismantled what it described as the first illicit weight-loss medicine production facility discovered in the UK. The operation uncovered 5,000 unauthorised retatrutide and tirzepatide pens, thousands of empty pens and raw chemical ingredients. The combined materials had the potential to produce tens of thousands of doses.

The latest seizure adds to the agency’s efforts to remove unlicensed products from circulation and disrupt the networks believed to be supplying them.

Public Urged to Buy Weight-Loss Medicines Only From Registered Pharmacies

The MHRA has directed consumers to its FakeMeds campaign website for guidance on identifying risks when purchasing medicines online.

People should be cautious about weight-loss products offered through unregulated websites or other sellers that cannot provide legitimate prescriptions and appropriate pharmacy services.

Anyone experiencing a suspected side effect from a medicine is encouraged to contact a doctor, pharmacist or nurse. Reports can also be submitted directly through the MHRA’s Yellow Card scheme, which collects information about suspected adverse reactions to medicines.

MHRA’s Enforcement Unit Continues Crackdown on Medicines Crime

The MHRA’s Criminal Enforcement Unit leads the agency’s response to illegal medicines activity. Its work includes analysing intelligence, disrupting online sales, conducting covert operations and recovering assets, often in cooperation with police and other law enforcement organisations in the UK and abroad.

The wider agency, an executive body of the Department of Health and Social Care, is responsible for regulating medicines and medical devices across the UK, with the aim of ensuring that they meet appropriate standards of safety, quality and effectiveness.

The Birmingham raid underscores the continuing challenge posed by counterfeit weight-loss treatments, with authorities warning that products obtained outside regulated channels may carry risks that consumers cannot readily identify.