The International Sheep Dog Society

Since 1906 the Society has been working for Sheep Dogs - find out how you can get involved with what's going on!

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How you can get engaged...


In 1873 the first recorded sheep dog trials were held in Bala, North Wales, but it was not until some 33 years later that The International Sheep Dog Society (ISDS) was formed, following a meeting of English and Scottish sheep-men in 1906. Shortly afterwards the first International Trials were held in Gullane, Scotland and, except during the war years and pandemic, have continued to be an annual event.

Explore our story - ISDS Online Archive

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Border Collie puppy

The International Sheep Dog Society is a membership organisation and registers over 6,000 Border Collie pups every year on behalf of its members. The ISDS Number and Dog Certificate are a guarantee of pedigree that, for most dogs, can be traced back over 100 years.

Breeding & Registration

A central purpose of the Society is to register working sheepdogs, Border Collies, in the ISDS Stud Book which is published each year. Dogs from all nations in the world are included.

Breeders can use the Stud Books to look up the parentage and lines of any ISDS registered dog.  Good dogs, of known working ability or trialling success, can be identified and sensible breeding decisions made. That is why so many people recognise the value of registering with the ISDS and more are joining each year.

Plan your visit to any of this years trials!

The International Sheep Dog Society organises five main trials each year within the UK and Ireland. National trials are normally held during the months of July and August, and the International is held in September.

Every third year the Society also organises a World Sheep Dog Trial, the next World trial is taking place in 2026.

There are many hundreds of smaller local trials within the UK and Ireland, and a few hundred more if you count up all around the world!

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This years English National is on Thursday 8th - Sunday 11th August at Moorlands Farm, Princetown, Devon, PL20 6SA.
Flag of Ireland


This years Irish National is on Thursday 22nd - Saturday 24th August in Clonmany, Co. Donegal, F93 XP49.
Flag of Scotland


This years Scottish National is on Wednesday 28th - Saturday 31st August at the Farr Estate, Inverness, IV2 6XB.
Flag of Wales


This years Welsh National is on Wednesday 14th - Friday 16th August at Tregaron Trotting Club, Pontrhydfendigaid, Ystrad Meurig, SY25 6EL.
International flag


This years International Sheepdog Championship will be held on Thursday 12th - Saturday 14th September at Syde Farm, Carmichael, Biggar, Lanarkshire, ML12 6NQ.
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The World trials are held every 3 years, where competitors from all over the world qualify in their own countries to compete with their sheepdogs. The next World Trial will be held in 2026, keep your eyes peeled for more information!
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Why become a member?

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