Competing in the world class show jumping event, Canterbury equestrian rider Tim Price and his horse, Ringwood Sky Boy, lead the group after an impressive second day at the event.
Price won the trials with 27.3 points.
He was one of three New Zealanders who finished in the top 20 at the trials. Andrew Nicholson placed third, while Sir Mark Todd finished 18th.
British publication Horse and Hound praised Price for winning his first four-star title on British soil.
Equestrian New Zealand General Manager Dana Kirkpatrick said she was proud of Price. The win had been a long time coming and was a "fantastic result".
She said it was a great performance indicator going into the World Equestrian Games in Tryon, North Carolina, in September.