• 
  Old Stone Vets - Stanhope

  Stanhope
• 
  Oldstone Vets Ballymena

  Ballymena
• 
  Onca Vets

  Norwich
• 
  Orby Vets

  Skegness
• 
  Orchard Veterinary Centre

  Armagh
• 
  Orchard Veterinary Centre Sherwood

  Nottingham
• 
  Orchard Veterinary Group

  Glastonbury
• 
  Orchard Vets - Ashurst

  Ashurst
• 
  Orchard Vets - Romsey

  Romsey
• 
  Orford Vets

  Warrington
• 
  Origin Vets Clinic

  Cardiff
• 
  OrtonVets

  Peterborough
• 
  Otter Vets - Ottery St Mary

  Ottery St Mary
• 
  Otter Vets - Sidmouth

  Sidmouth
• 
  Oundle & Thrapston Vets - Oundle

  Oundle
• 
  Oundle & Thrapston Vets - Thrapston

  Thrapston
• 
  Oval Pet Centre - Sidcup

  Bexley
• 
  Oval Pet Centre - Welling

  Bexley
• 
  Oxford House Veterinary Clinic

  Tonypandy
• 
  PARC Vet Care

  Bangor
• 
  PAWS Veterinary Health Centre

  Nuneaton
• 
  Paddons Vets

  Wisbech
• 
  Palmer & Duncan Vets

  Ossett
• 
  Palmerston Veterinary Group - Buckhurst Hill

  Buckhurst Hill