The British Horse Society (BHS) has been holding castration and healthcare clinics across the country to help tackle the UK's horse overpopulation crisis.
Last week saw the 200th colt called Monty be castrated in Preston and the charity has now held nine castration and healthcare clinics across the country.
In total, 208 colts and stallions have been castrated and altogether 379 have attended the clinics as part of the BHS healthcare and education package
Veterinary professionals and students volunteered their time to help the charity through the British Equine Veterinary Association (BEVA) as Britain continues to be in the grip of an unprecedented horse crisis.
A rise of horses abandoned in recent years has seen scores of the animals going uncared for and, in the worst scenarios, humanely destroyed when they have nowhere else to go.
Luke Edwards, veterinary surgeon at University of Liverpool, said: "I have been to several of the BHS/BEVA castration clinics. Each one has been constructive and satisfying.
"It is difficult to successfully manage a colt or a stallion, and after speaking to the attending horse owners it is often clear that the animal will have a better quality of life after castration."
Lauren Manzor from Forth Valley Equine Vets, who volunteered on the project, said: "I originally volunteered for the project because I have professionally witnessed first-hand the issues that go along with indiscriminate breeding and horse over-population.
"I feel that if the horse population can be controlled and clients can be educated with projects such as BHS/BEVA Castration Projects, the overall welfare of British horses can be improved."
The BHS has also been supported by Zoetis and Shires with lots of assistance from World Horse Welfare, Redwings, RSPCA, Blue Cross, Dean Bland from Well Equine and The Donkey Sanctuary.
To find out how you can help the BHS, visit: http://www.bhs.org.uk/welfare-and-care/our-campaigns/helping-horses