Linnaeus

Linnaeus, a veterinary group spanning referral and primary care

Linnaeus is a group of veterinary practices operating across the United Kingdom and Ireland, bringing together specialist referral centres and primary care clinics. The group was founded in 2014 and describes itself as one of the most highly-respected veterinary groups in those two markets, a positioning it attributes to its own presentation rather than to an external ranking.

Its stated purpose is "A better world for pets", and it frames its activity around two elements: a commitment to clinical excellence and the professional development of its clinical and non-clinical staff, referred to internally as Associates.

Scale of the network

The figures published by the group give a clear picture of its size:

• More than 180 locations across the UK and Ireland
• 18 referral practices
• 63 primary care practices
• 6,750 Associates
• 1,457 veterinarians
• 2,107 nursing staff

The group states that it selects practices individually, looking for those that fit its quality criteria, and that its network covers small animal, farm and equine veterinary medicine.

Clinical education, quality and research

Linnaeus organises its clinical approach around three declared pillars: clinical education, clinical quality and clinical research. Within this framework it maintains a Clinical Board and dedicated teams for veterinary nursing, pre-registration experience, professional development and nursing operations, as well as a medical team and defined specialisms.

Its training structure includes a Veterinary Graduate Development Programme, a Post Registration Programme for patient care assistants and student veterinary nurses, internships and residencies, and career pathways for nursing. It also runs an Extra Mural Studies programme linked to veterinary schools and a student ambassador scheme.

Recruitment and relocation support

The group publishes specific guidance for veterinary professionals moving to the UK, covering the visa process and the support it says it can provide, alongside frequently asked questions on relocation. It also addresses practices and individual associates interested in joining the group, through separate channels for businesses and for associates.

Ownership and international context

Linnaeus is part of the Mars Veterinary Health family of veterinary practices and laboratories. According to the group, that wider network comprises around 2,500 veterinary clinics and hospitals in more than 20 countries, with over 70,000 veterinary health Associates and more than 25 million pet care visits per year.

Operating principles and sustainability

The company states that it applies five principles to its decisions: quality of work and contribution to society, responsibility, mutuality of benefit for stakeholders, efficiency in the use of resources, and financial freedom to make its own decisions. On the environmental side, it references participation in Investors in the Environment, an environmental policy, One Health case studies, action on lower-flow procedures and safeguarding of antibiotics.

Its published news items, dated between July 2025 and February 2026, cover topics such as veterinary research insights, a national award received by a Herefordshire practice, specialist care at a Cumbrian animal hospital, a bespoke orthotic fitted to an English Setter, and surgical cases involving a Hampshire practice and a road-accident patient.