British Equestrian
The National Governing body of equestrian sport in Great Britain
https://www.britishequestrian.org.uk/
British Horse Society
The UK's largest and most influential equestrian charity. It is committed to improving the welfare of horses and ponies, through education and training, and promoting the interests of its membership of horse riders and owners.
Museum of the Horse
The Museum of the Horse at Tuxford, Nottinghamshire, kindly lent the tiny historic sidesaddle used on Bytham Abigail in the HOYS 2017 display The Story of the Caspian Horse
https://museumofthehorse.co.uk/
Central Prefix Register
Register your own unique prefix or suffix for use when registering your stock with most UK and some foreign breed societies.
https://www.centralprefixregister.com/
National Equine Welfare Council
Umbrella organisation for welfare societies, provides news, advice, codes of practice.
UK Studs
Bathley Hill Farm Stud
Owned and run by Penny Walster, breeding sports ponies, Caspians and their part breds.
http://www.bathleyhillfarmlivery.com/
Holloway Caspians
Owned and run by Harry Thirlby in Wiltshire, breeding Caspians and their part breds.
http://www.hollowaycaspians.co.uk/
European Studs
Levend Langoed NOVA
Breeder of Caspians in The Netherlands. Ecological, interactive and educational rare breed farm.