James graduated from the Royal (Dick) School of Veterinary Studies, Edinburgh in 2001. After four years in mixed practice he travelled between the hemispheres working for a number of years in specialist stud practice in the UK, Australia and New Zealand. In 2010 he was awarded the RCVS certificate in Equine Stud Medicine and in 2011 became a lecturer at Liverpool University examining the stud medicine certificate since 2012.

James has published work on many topics relevant to clinical practitioners including material on breeding soundness evaluation, infectious disease, peri-partum problems, ovarian abnormalities, oestrus suppression, persistent endometrial cups, management of spring transition and twin pregnancy. James continues to perform and publish practice based research and collaborates widely. In 2013, he became director of Equine Reproductive Services (UK) Limited growing and developing a busy first opinion and referral equine practice in Yorkshire. James is recognised as an Advanced Practitioner in Equine Stud Medicine, he is a current BEVA council member and trustee of the International Equine Reproduction Trust.

James has made a sustained and significant contribution to veterinary professional development with formal and informal teaching and assessment of post graduates. James has organised and delivered many CPD courses and congresses in the UK and Europe and has delivered presentations on material ranging from basic to advanced topics around the World. In 2022, his efforts were recognised by the Royal College of Veterinary Surgeons who awarded James with a Fellowship for meritorious contributions to clinical practice.

Dr. Sielhorst is a Diplomate of the European College of Animal Reproduction and is currently affiliated with the Tierärztliche Hochschule Hannover and the equine hospital Tierärztliches Kompetenzzentrum Karthaus. She obtained her veterinary degree in 2006 and received her specialty training at the University of Hannover in Germany. Her research interests include ultrasonography of the late pregnant mare, use of Doppler ultrasonography in the pregnant mare and functionality of the pregnant uterus.

Tom qualified from Cambridge University's School of Veterinary Medicine in 1993. He performed his PhD, also at Cambridge, on 'Maternal Recognition of Pregnancy in the Mare' under the supervision of Professor W.R. 'Twink' Allen at the Equine Fertility Unit in Newmarket funded by the Horserace Betting Levy Board. After a short period as Lecturer in Animal Reproduction at Cambridge Tom moved to Utrecht University to become a lecturer in equine reproduction. In 2007, he was appointed to the Chair of Equine Medicine and Reproduction at the Department of Equine Sciences and also to an extraordinary Chair in Reproduction at the University of Pretoria, Department of Production Animal Sciences.

Tom is a Diplomat of the European College of Animal Reproduction (ECAR) and a Royal Dutch Veterinary Association specialist (KNMvD) in Equine Reproduction. He runs a busy clinical discipline working on all aspects of equine reproduction, with increasing emphasis on assisted reproduction and diagnosis and treatment of infertility. Tom's research interests are focussed on fertilisation, early embryonic development and early pregnancy loss in mares and in the relationships between semen quality and fertility in stallions. He is also involved in studies into semen quality and early embryonic development in farm animal and wildlife species and contraceptive techniques for the management of wild animal populations.