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EFS Top Contender
A British bred stallion, part of the winning team in Mexico City Longines Global Champions Tour 2018. New to the top of the sport in 2017, Top Contender has already made his mark. After winning the International Stairway at South of England under new rider Michael Duffy he has gone on to jump at some […]
Big Star
Big Star is one of the best showjumping horses in the world, with numerous high profile wins including two Olympic Gold titles under the renowned rider, Nick Skelton. Nick himself has referred to Big Star as “the best horse I have ever ridden”. It is also notable that this exceptional stallion is passing his athleticism and incredible temperament onto his progeny, making him a top choice for any jumping mare.
Russel II
Russel II is a fully approved AES stallion from the Holstein Stamm line 4232. He competed at the 2008 Olympic Games in Beijing as well as on numerous Nations Cup Teams, jumped on the 2006 World Championship team in Aachen and has won many classes including Puissance, Grand Prix and Six Bar.
Cassionato
Successful international Grade A show jumper, who together with his rider Michael Whitaker was part of the British team at the 2016 Rio Olympic Games as well as the 2015 European Championships and in the same year helped Britain win the CSIO 5* Furusiyya FEI Nations Cups at La Baule, Rotterdam and Rome.
Semen Order Form
Make sure we have all the correct details by using our online booking form
Pre Entry Health Testing
- AHT Submission Form
- Pre-entry health certificate
- EU only pre-entry certificate
- EU Guidance Notes
StalCAM
View every resident stallion live, and the yard, online now through our unique StalCAM CCTV system
Client Comments
Weston Justice has been going to “Boarding School”, Stallion AI Services, on and off now since he was 4 years old. His and our treatment there has always been 5* and we know his every need is cared for. The real proof is that he always comes home in very good form and we know that he has been well looked after.— Richard and Julie Knight, Weston Stud
AI Equipment Sales
Twemlows Stud
Welcome to Stallion AI Services
Stallion AI Services has been successfully practising AI for over 18 years. The centre is owned and managed by Tullis Matson.
We have collected semen from over 600 stallions and carried out over 11,000 collections.
We boast the latest technology in our laboratory, which is envied and admired by breeders throughout the world and we offer a wide range of services including semen freezing and storage, fertility testing, fresh and chilled semen distribution, mare insemination centre, training courses and AI equipment.