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Farm Animal Vets

Our farm vets at the practice have a wide range of experience in farm animal medicine and surgery. We are all involved in day to day practical work as well as providing additional management support to our clients.

Greg Mallard

Greg graduated from the University of Bristol in 1988 and joined Garston Veterinary Group in August of the same year. He has always worked in the Farm Animal side of the practice and became a partner in 1996. His areas of interest include nutrition and computerised herd recording systems. He is involved in the training of Animal Health Inspectors in farm animal welfare. He is married with two sons.

Duncan Williams

Duncan graduated from Glasgow Veterinary School in 1991 and after a period of mixed practice in the Scottish borders joined the Farm Animal Unit at Garston Veterinary Group. He is responsible for the care of the animals at Longleat Safari Park and is a DEFRA Zoo Inspector covering the whole of the UK. He became a partner in the Practice in 2000 and is married with four children.

Chris Mangham

Chris joined the practice in July 2007 having graduated from the University of Bristol. He has a particular interest in Bovine fertility and surgery. He became a partner in 2012. He is involved in regular herd health and fertility visits on farms as well as an involvement in SWHLI.
He is a keen sportsman and enjoys rugby and going to the gym.
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Georgina Doel

Georgina joined the practice in May 2011 after previously working in a farm animal practice in Devon. She enjoys all aspects of farm work particularly youngstock and is keen to develop herd health planning to aid a more profitable future in farming. Georgina comes from a local farming family and is now married to a dairy farmer. She is currently on maternity leave after the birth of her daughter.

Tom Cook

Tom joined the practice in September 2011 after graduating from Bristol Vet School. His family have a dairy farm in Taunton, Somerset. He is interested in using preventative medicine to reduce disease in farm animals. Outside of work he plays rugby for Frome and helps with the family farm.

Vicky Webster

Vicky joined the practice in 2008 after graduating from Bristol University Vet School. She spends some of her time at the practice working on the farm side carrying out routine herd health and fertility work. Her free time is spent exploring the countryside, either on horseback with her Dales ponies or walking her labrador.


Samara Johnstone

Samara completed a degree in Animal Science before going on to qualify from the Royal Veterinary College in 2010. She joined the practice in 2012 having worked at one of our neighbouring practice previously. She has a particular interest in preventative herd health, livestock fertility work and equine medicine. Outside of work she enjoys all outdoor pursuits, running, horse riding and hockey.

James Ryder

James joined the practice at the beginning of October 2013. James qualified from Bristol in 2012 and has worked in Mixed Practice in the West Midlands for the past year. He is relishing the opportunity to work in full time farm animal practice and develop his interests in this area. Out of work James enjoys outdoor pursuits, traveling and walking his springer spaniel Monty!

Guy Parkinson

Guy graduated in 1974 at the Royal Veterinary College, London University.
He has been with the practice for 35 years, and was a partner for 27 years as part of Glenleigh Veterinary Practice originally and then with Garston Veterinary Group since we merged in 2001.
He is married to Gill and his interests are travelling, walking and wine.
Guy retired from the practice in September 2011 but helps us occasionally with TB testing duties