One Company. Many Countries. Same Fight.
MBR Acres is one site. The company that owns it — Marshall BioResources — is a family-owned American company, founded in 1939 in North Rose, New York, with locations in the United States, the UK, France and China. Closing one operation without closing the others only shifts the cruelty. We are aligned with Save the Dogs USA on the wider Marshall campaign. Independent organisations, one parent company, one fight.
Marshall’s Operations
Marshall BioResources is one of the world’s largest commercial breeders of dogs for laboratory testing. It is a multinational with breeding operations across several countries — the UK and US sites below are two fronts of a much wider business.
MBR Acres
Marshall’s UK arm. Wyton, Cambridgeshire. Approximately 2,000 beagle puppies bred every year for sale to laboratories. Operates under a Section 2C establishment licence under the Animals (Scientific Procedures) Act 1986.
Five Crown Court trials in 2025–26: two acquittals, three convictions, none with immediate prison. Westminster Hall debate 27 April 2026. The High Court granted permission in July 2026 for a judicial review of the new protest-law regulations; as of October 2026 it has not been decided.
Marshall Farms
Marshall’s primary US operation in upstate New York, plus contracts and supply relationships to laboratories including those that sourced from Ridglan Farms, Wisconsin — the breeder that closed for good in August 2026, with every remaining dog transferred out, after a multi-year campaign including Save the Dogs USA. With Ridglan gone, Marshall Farms is the last major US breeder of dogs for laboratories.
US targets named in the Save the Dogs USA campaign include Governor Kathy Hochul (NY), Attorney General Letitia James, Rep. Nick Langworthy (R-NY 23), and federal Members of Congress.
Marshall’s Facilities Worldwide
Marshall BioResources breeds dogs — and other animals — for laboratories on three continents. MBR Acres is one node in a much larger network. Here is what is known publicly, site by site. Marshall has also published its own defence of all of it — an FAQ, and pages on medical advances, national security and animal welfare. We answer each of them, point by point, with sources.
North Rose, New York
Marshall Farms: the company headquarters and flagship breeding site since 1939. Tens of thousands of dogs and ferrets bred for research every year; Rise for Animals put the animals on site at over 32,000 in August 2026.
MBR Acres & B&K Universal
MBR Acres at Wyton, Cambridgeshire breeds roughly 2,000 beagles a year for laboratories. B&K Universal at Grimston, near Hull, is Marshall’s other UK site.
More from Camp BeagleGannat, Mézilles & Lyon
French sites at Gannat (Allier) and Mézilles / Centre d’Élevage du Domaine des Souches (CEDS), which Marshall acquired in 2021, plus a presence in Lyon — breeding beagles and golden retrievers for laboratories.
More from Camp BeagleBreeding Facilities
Marshall operates breeding facilities in China. Public detail on these sites is limited — we state that plainly rather than speculate.
A Market, Not a Site
Marshall ferrets are sold in Japan, but Marshall’s own website lists breeding locations only in the US, UK, France and China. We have found no public record of a Marshall breeding facility in Japan.
Green Hill, Montichiari
Green Hill in Montichiari (Brescia) was once one of Europe’s largest research-dog suppliers. It was seized and shut down following a cruelty case — a Marshall-linked facility that has already been closed for good. Precedent.
The Green Hill StoryFacility details drawn from Camp Beagle’s reporting on Marshall BioResources (thecampbeagle.com).
Why This Matters
A campaign that closes MBR Acres but leaves Marshall’s US operations untouched does not stop the breeding business model — it just relocates it. The same is true in reverse. Save the Dogs USA put it directly:
“Marshall is one company — closing one operation without closing the other only shifts the cruelty.”
— savethedogs.io / marshall
Two independent campaigns, on two sides of the Atlantic, applying pressure to one company. Different legal regimes, different tactics, same target. That is the model.
Ridglan. Closed For Good.
Ridglan Farms in Wisconsin is the closest US analogue to MBR Acres. After years of investigations, a 2025 court probable-cause finding for felony animal cruelty, sustained nonviolent action including a 1,000-strong gathering met with tear gas, and cross-party congressional pressure, Ridglan began releasing 1,500 beagles on 1 May 2026. It did not stop there: Ridglan closed permanently, and the last of its dogs left on 12 August 2026 — more than 2,100 in total.
A breeding facility shut for good. The same commercial breeding model runs at MBR Acres. The same tools work. The route is visible.
The Full Ridglan StoryHow this campaign sits
Save the MBR Beagles started as a purely independent UK campaign and is still independently run. As the wider fight against Marshall BioResources has come together across both sides of the Atlantic, we’ve been happy to align with allied campaigns — including Save the Dogs USA, the Beagle Freedom Project, Animal Rising, Camp Beagle and the broader UK coalition of welfare and protest groups working to end commercial dog breeding for laboratory testing. Different organisations, different countries, different tactics. One outcome we are all working towards: empty buildings.
What You Can Do
The MBR Acres fight benefits from the global pressure on Marshall. The Marshall pressure benefits from the MBR Acres legal record. Both work better in tandem.
In short
Marshall, in short
Who owns MBR Acres?
What is Marshall BioResources?
Where are Marshall BioResources’ facilities?
Is Marshall Farms the largest dog breeder for laboratories in the US?
What does the Ridglan Farms closure mean for Marshall BioResources?
One Movement
UK ground action and US solidarity feed each other. The dogs are why.
Sources for this page: savethedogs.io/marshall (Save the Dogs USA campaign overview); savethedogs.io/ridglan (Ridglan campaign timeline, the 2026 releases and permanent closure); marshallbio.com (founding date and locations); Fox6 Milwaukee, 12 August 2026 (Ridglan’s last dogs released); thecampbeagle.com (Camp Beagle reporting on Marshall BioResources facilities in the UK, France and beyond); bfp.org/ridglan (Beagle Freedom Project rescue placement appeal); Spectrum News 1 Wisconsin and Associated Press for congressional and Wisconsin governor coverage. UK court record drawn from public Crown Court reporting and Hansard for the 27 April 2026 Westminster Hall debate.