| Sites in the UK | International Sites |
| Milk Development Council | Interbull – Sweden |
| National Dairy Council | USDA – USA |
| ANAFI – Italy | |
| Breed Societies | CR-Delta – Netherlands |
| CDN – Canada | |
| Holstein UK | VIT – Germany |
| Ayrshire Cattle Society | ADHIS – Australia |
| English Guernsey Cattle Society | Svensk Avel – Sweden |
| World Guernsey Society | ICBF – Ireland |
| Shorthorn Society | INRA – France |
| AEU – New Zealand | |
| Milk Recorders | |
| National Milk Records | |
| Cattle Information Service (CIS) | |
| United Dairy Farmers | |
| Holstein UK |