Many Northern European countries – including France, Germany, Sweden, Ireland, The Netherlands, Belgium and Denmark – perform genetic evaluations of sport horses (competing in dressage, show jumping or eventing). Publication of estimated breeding values (EBVs) aids selection of animals for breeding to produce progeny with high performance ability. At least 9 of the 10 top ranked horses in the 2008 Olympics individual grand prix freestyle dressage competition were from studbooks that perform genetic evaluations (5 Hanoverian, 2 each of Dutch and Swedish Warmblood). In the UK however, little genetic evaluation of our sports horses has been performed, and EBVs are not currently predicted. The aim of this study was to perform genetic evaluations of horses competing in dressage competitions in the UK.