This is Part 2 of a series exposing the people and companies behind the UK’s laboratory animal supply chain. This post focuses on Scott Marshall, CEO of Marshall BioResources. All claims are based on public records and cited sources listed at the end of this article. Part 1 covered Russell Morgan and Impex Services International Limited.
Scott Marshall is the CEO of Marshall BioResources, a company that breeds tens of thousands of beagles, ferrets, cats, and minipigs every year and sells them to laboratories for toxicology testing, drug trials, and chemical experiments. His family has profited from animal suffering for nearly nine decades. His company has faced criminal convictions, federal violations, disease outbreaks, and whistleblower exposés. He has responded to almost none of it.
Who is Scott Marshall?
Scott Marshall is a third-generation animal breeder. His grandfather, Gilman Marshall, founded Marshall Farms in 1939 in North Rose, New York, originally raising ferrets for hunting.
In 1962, the Marshall family spotted a bigger opportunity. The FDA had tightened regulations requiring more animal testing before drugs could reach the market. The Marshalls responded by establishing a colony of beagle dogs bred specifically for laboratories. The business model has not fundamentally changed since.
Scott Marshall took over as CEO in January 2003. He holds a law degree from Southern Methodist University and a BS from Cornell University. Under his leadership, the company expanded into a global operation spanning the United States, United Kingdom, France, China, and Japan.
Scott Marshall is notably silent in public. Beyond calling a criminal conviction of his own employees “wrong,” Scott Marshall has given no substantial interviews or public statements addressing the significant body of criticism directed at his company.
The scale of what Marshall BioResources does
- 23,000+ dogs confined at the North Rose, New York facility alone at any given time
- 66,000+ animals total across all operations, including ferrets, cats, and minipigs
- 2,000 beagle puppies per year bred at MBR Acres, the UK facility in Wyton, Cambridgeshire
- Operations in six countries: USA, UK, France, China, Japan, and (until criminal prosecution) Italy
- Customers include the NIH, FDA, Department of Defense, Department of Veterans Affairs, CDC, and private laboratories including Labcorp
- The company has trademarked the animals themselves: the Marshall Beagle, Marshall Ferret, Marshall Cat, and Gottingen Minipig
Scott Marshall also runs Marshall Pet Products, selling ferret toys and food through Petco and PetSmart. Critics argue this consumer brand allows pet owners to unknowingly fund a laboratory animal breeding operation.
What happens to the animals
Beagle puppies bred by Marshall BioResources are sold to laboratories at around 16 weeks old, still puppies. They are used primarily for toxicology testing: force-fed experimental chemicals, injected with drugs, subjected to inhalation studies.
Beagles are chosen because of their docile temperament – they rarely bite even when in pain – their manageable size, and decades of historical precedent dating back to Cold War-era radiation experiments.
What investigators found inside Marshall facilities
Whistleblower photographs from the North Rose facility revealed:
- Beagles locked in barren wire cages suspended above filthy, faeces-covered concrete
- Metal mesh flooring causing chronic foot injuries
- Cages cleaned only once every two weeks
- Puppies killed for being “non-standard”, including one destroyed simply for having different-coloured eyes
- Puppies found dead in enclosures alongside large quantities of blood
- Four to five beagles crammed into single cages, leading to fights
- Management allegedly hiding non-compliant conditions ahead of federal inspections
The USDA record
Since 2007, the USDA has cited Marshall Farms for more than 20 violations of the Animal Welfare Act, including inadequate veterinary care, buildings infested with mice and flies, dogs standing in their own filth, and failure to provide the minimum required space.
In 2023, an official USDA warning was issued (Case Number NY230026). A worker’s hand was amputated by an industrial mixer at the facility, leading to an OSHA citation and an $18,282 penalty.
In 2022, a canine distemper outbreak swept through the facility, affecting 250,000 baby ferrets. Bacterial infections spread through cat and pig colonies, with positive infection rates as high as 92.2%.
Green Hill: when Marshall’s employees went to prison
Marshall BioResources’ Italian subsidiary, Green Hill in Montichiari, Brescia, was one of Europe’s largest suppliers of dogs for research – until it became a crime scene.
In June 2012, environmental group Legambiente and animal rights group LAV filed a criminal complaint. Investigators found that over 6,000 dogs had been killed in a four-year period, either because they could not be sold or because treating them was deemed too expensive.
In July 2012, a Brescia court ordered the facility seized. 2,639 beagles were confiscated and rehomed with families across Italy. When Marshall BioResources demanded the dogs back in 2013, the judges refused.
Three employees were convicted of animal cruelty in January 2015:
| Name | Role | Sentence |
|---|---|---|
| Ghislaine Rondot | Executive Manager | 18 months imprisonment |
| Renzo Graziosi | Veterinarian | 18 months imprisonment |
| Roberto Bravi | Facility Director | 1 year imprisonment |
All three were also barred from breeding dogs for two years. The convictions were upheld by the Brescia Court of Appeals in 2016 and the Italian Supreme Court in 2017.
Scott Marshall’s public response to three of his employees being imprisoned for animal cruelty was to call the judgment “wrong.”
Green Hill was permanently closed in 2016.
The UK operation: MBR Acres
Marshall BioResources operates its UK breeding facility through MBR Acres Ltd (Company No. 10742432), an eight-acre site near Huntingdon in Wyton, Cambridgeshire. It is the UK’s only facility breeding beagles specifically for laboratory use.
The corporate structure is layered:
- Marshall Farms Group Ltd (USA) controls MFG International Limited (UK holding company, No. 10721257)
- MFG International controls MBR Acres Ltd
- MFG International also controls BK Star Limited (No. 07016814), which owns B & K Universal Limited (No. 01072412), a breeding operation in Hull producing ferrets, guinea pigs, rats, and mice
- The directors of both MFG International and MBR Acres are Cyril Odin Michel Marie Desvignes (French, Director of European Operations) and Andrew David Smith (American)
Puppies are collected from MBR Acres by Impex Services International, the UK’s only independent laboratory animal courier, run by Russell Morgan, and delivered to laboratories including Labcorp.
Camp Beagle
Since June 2021, activists have maintained Camp Beagle, a permanent protest camp outside MBR Acres. It is the longest-lasting animal rights protest camp of its kind in the UK.
- Policing has cost Cambridgeshire Police an estimated £1.47 to £2.15 million
- In February 2025, the High Court removed an exclusion zone around the facility
- Suppliers Avanti and Monarch Gas terminated contracts under public pressure
- Animal Rising activists entered the facility and rescued 23 beagles
- Celebrity supporters include Ricky Gervais and Peter Egan
- Camp Beagle has been nominated for the 2026 Lush Prize
Why this doesn’t have to happen
92–95% of drugs that pass animal testing fail in human clinical trials. Half of those failures are due to toxicity that animal models failed to predict. The average drug takes ten years to move through animal testing and still fails. Modern alternatives are not a distant prospect – they exist now and are gaining regulatory acceptance.
| Technology | What it does | Accuracy |
|---|---|---|
| Organ-on-a-chip | Microfluidic devices lined with human cells that mimic organ function | 87% accuracy for hepatotoxicity (liver chip) |
| Organoids | Lab-grown miniature organs from human stem cells | Market projected to reach $2.72 billion by 2030 |
| AI / in silico models | Machine learning predicting drug toxicity from biological data | 89% accuracy predicting cardiac arrhythmia vs 75% for animal models |
| 3D tissue models | Human cell-based tissue constructs | Replacing skin/eye irritation tests by 2026 under the UK government roadmap |
The regulatory landscape is shifting
- EU: Banned animal testing for cosmetics since 2013
- USA: FDA Modernization Act 2.0 (2022) removed the legal mandate for animal testing. FDA Modernization Act 3.0 passed the US Senate unanimously in December 2025
- USA: The EPA committed to eliminating all mammalian testing by 2035
- USA: The NIH announced in July 2025 it will no longer fund projects focused exclusively on animal testing
- UK: A November 2025 roadmap committed £75 million to replace animal testing, with specific deadlines for skin and eye irritation (2026), botulinum toxin (2027), and metabolic tracking in dogs (2030)
- 43+ countries have banned cosmetics animal testing
The FDA now aims to make animal studies “the exception rather than the norm” within 3–5 years. Scott Marshall’s company is betting its future on the old world lasting long enough to matter.
Why UK law lets this continue
The Animals (Scientific Procedures) Act 1986 is the primary legislation governing animal testing in the UK. Campaigners and reformers identify several critical failures:
- No requirement to prove alternatives were explored – scientists can simply state their own opinion that animal testing is necessary
- Hidden deaths – in 2017, on top of 3.72 million animals used in regulated procedures, an additional 1.81 million were bred and killed without ever being used in an experiment
- Killing isn’t regulated – killing an animal for its organs does not require a licence if done in a “prescribed way”
- The government protects the industry – in November 2025, ministers moved to classify animal testing sites as “Key National Infrastructure,” which would effectively criminalise peaceful protest near these facilities
What you can do
- Share this article – awareness is the first step
- Support Camp Beagle at thecampbeagle.com
- Contact your MP – demand stronger regulation and faster adoption of non-animal testing methods
- Check your purchases – Marshall Pet Products sells through Petco and PetSmart. Your money may be funding this operation
- Support the organisations fighting this: Cruelty Free International, PETA UK, Animal Free Research UK
Sources
- Companies House — MBR Acres Ltd
- Companies House — MFG International Limited
- Rise for Animals — Marshall BioResources
- Sentient Media — Marshall BioResources
- Camp Beagle
- PETA — Whistleblower report
- Science/AAAS — Green Hill sentences
- Nature — Green Hill conviction
- Cruelty Free International — Green Hill
- FDA Modernization Act 3.0
- UK Government — Animal testing roadmap
- GAO — Organ-on-a-chip report
- PMC — Drug failure rates
- The Conversation — 5% success rate
- Wikipedia — Camp Beagle
- Wikipedia — Marshall Farms
If you have any information on Scott Marshall please comment below.