Whitcoombe House Stables is set at the foot of the impressive Lambourn gallops in a peaceful and secluded area of an historic training centre known as The Valley of the Racehorse.

Here we offer first rate facilities both on the gallops and at our stables and have a friendly, experienced team of staff to assist the trainer in giving owners the best chance of an enjoyable and successful racehorse ownership experience.




Jonathan Portman is a hands on horseman with worldwide experience and has been training flat and jumping racehorses since 1998.

Formerly as an amateur rider he rode winners of flat in France and jump races in England. He was also closely involved in the training of point to pointers and Arabians, riding them with great success.

Prior to training, Jonathan was assistant to Breeders Cup winning trainer Jonathan Pease in Chantilly, France and to Derby winning trainer Luca Cumani in Newmarket. He also worked in Australia and the USA.

RT @RCFarquhar: Typically splendid comment from @jportmanracing on the @thelambournta website on one of his yard stalwarts. Good luck to al…22 hours ago
RT @saracumani: Cor blimey https://t.co/9MKAu19b4e7 days ago
RT @FranAltoftPhoto: Windsor 12/08 - Goodnight Girl wins her third race this year when winning the Ossie & Hutch Memorial Handicap under @r7 days ago
Thanks to my team for another winner @WindsorRaces with Goodnight Girl by 6 lengths @rob_hornby18 @jamesyharding Stroud Colman #whitcoombewinners1 week ago
RT @tatts_ireland: September grad Goodnight Girl wins the Fillies' Handicap @WindsorRaces for @jportmanracing Rob Hornby & owner A Chesterm…1 week ago
RT @WindsorRaces: A Win for @jportmanracing & @rob_hornby18 as GOODNIGHT GIRL takes the third race of this afternoon! Congratulations to al…1 week ago
RT @Racing_Results_: 15:25 @WindsorRaces1st Goodnight Girl 6/5 2nd Dotted Swiss 9/2A Win for @jportmanracing and @rob_hornby18Full Re…1 week ago
RT @FranAltoftPhoto: Newbury 07/08 - Even Keel rallies in the closing stages to win the fifth race by a neck under @rob_hornby18 for @jport2 weeks ago
RT @RacingPost: Pulled from a hellhole: Jo Foster on how the IJF saved her after serious injury >>>https://t.co/J1pdtiA3Tf https://t.co/rAq…2 weeks ago
RT @joshapiafi: Tears before breakfast at the Apiafi house @JoFosterRacing an amazing and inspirational read in today’s @RacingPost If ther…2 weeks ago

Winner at Windsor 3 year old filly Goodnight Girl won her third race of the season when running away with this fillies handicap by 6 lengths…

Winner at Newbury Two year old colt Even Keel won the 7f nursery handicap ridden by Rob Hornby for our home run partnership Berkeley Racing….

Winner at Newbury 3 year old filly Goodnight Girl won the 6f handicap in good style under jockey Rob Hornby for owner Alex Chesterman. This…

If you’re interested in having a horse in training with Jonathan, please get in touch...