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.

Patience rewarded for @HotToTrotRacing @WindsorHouseLam with Mariance a winner @LingfieldPark @Atzenijockey. Thanks to all involved #whitcoombewinners7 hours ago
RT @WhitsburyManor: ADAAY 2yo winner no. 22! Mariance wins for @jportmanracing and @HotToTrotRacing to continue Adaay’s fine end to the se…7 hours ago
RT @StoweRacing: Wine, catalogues and much discussion with our two #topnotch @oldstoic trainers @AlexHalesRacing @jportmanracing whilst @Ta8 hours ago
RT @WindsorHouseLam: We finally get a win into Mariance at Lingfield for @jportmanracing well done team, 9th time lucky busiest 2 year old…8 hours ago
RT @HotToTrotRacing: Winner!! MARIANCE (@jportmanracing) gets her well deserved win at @LingfieldPark under a great @Atzenijockey ride. Wel…8 hours ago
RT @MartinPBSmith: When you want to ride in the Grand National but you mum says you’re not old enough yet.. https://t.co/HBSk9wQrvh1 week ago
Winner @WindsorRaces thanks to the improving Charles Le Brun for owner breeder @PaulKGardner @rob_hornby18 . Well done to all involved.#whitcoombewinners1 week ago
RT @WindsorRaces: RESULT RACE 1 - Windsor Racecourse Supports @RacingtoSchool Handicap 🥇 Charles Le Brun 🥈 Tomahawk Ridge 🥉 Refuge Jockey…1 week ago
RT @Racing_Results_: 13:00 @WindsorRaces 1st Charles Le Brun 7/4 2nd Tomahawk Ridge 12/1 3rd Refuge 5/2 A Win for @jportmanracing and @ro1 week ago
RT @GB_Bonus: When @jportmanracing started training 20 years ago, his first winner was for Simon Skinner, who has been a staunch supporter…3 weeks ago

3 year old gelding Charles Le Brun won the 5f handicap under jockey Rob Hornby for owner breeder Paul Gardner of Springcombe Stud. This was…

Spring Run made the transition from the flat to hurdling look easy when finishing second in the mares maiden hurdle at Ffos Las having jumpe…

2 year old filly New Heights won the fillies novice race by just under two lengths beating stablemate Hellavapace. She had finished 4th on h…

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