The Dorset Horn Sheep Breeders' Association was established in 1891 for "the encouragement of the breeding of Dorset Horn Sheep at home and abroad and the maintenance of the purity of the breed".

During the late 1950's hornless Dorset sheep, developed in Australia, were introduced to the UK and rapidly grew in popularity. By 1974 there were more Poll Dorsets registered than Dorset Horns and in recognition of this the Association's name was changed in 1981 to the Dorset Horn and Poll Dorset Sheep Breeders' Association.

The Dorset Horn Sheep Breeders' Association was established in 1891 for "the encouragement of the breeding of Dorset Horn Sheep at home and abroad and the maintenance of the purity of the breed".

During the late 1950's hornless Dorset sheep, developed in Australia, were introduced to the UK and rapidly grew in popularity. By 1974 there were more Poll Dorsets registered than Dorset Horns and in recognition of this the Association's name was changed in 1981 to the Dorset Horn and Poll Dorset Sheep Breeders' Association.