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.

Hey ho another second but great effort from Orin Swift and ride from @harry_bann1310 for lovely owners.2 days ago
Three runners today, three seconds. Oh well! Still great work by the team at home, thanks.3 days ago
Delighted to be sent this Kodiac colt from ⁦@Tattersalls1766⁩ ⁦@Matthworth⁩ by some fantastic owners #Whitcoombewinners https://t.co/feSA9l2Hqs7 days ago
RT @JohnWathenBerry: Sad day saying ‘Farewell’ to our dear friend Mick O’Shea. National Hunt jockey; @lucacumani head lad; @BRSNewmarket in…1 week ago
RT @jamesyharding: Toybox fresh as a daisy after breaking her maiden @kemptonparkrace @jportmanracing @rob_hornby18 for Mr Boswood & Mrs Pe…1 week ago
Another 2yo winner thanks to Toybox @kemptonparkrace @rob_hornby18 . Thanks team #whitcoombewinners1 week ago
RT @Racing_Results_: 17:45 @KemptonParkRace1st Toybox 11/8 2nd Freed From Desire 11/2 3rd Emily's Sea 13/2A Win for @jportmanracing and…1 week ago
So that’s 30 wins this year. Huge thanks to all @jportmanracing getting us there. Might not sound a lot but you try it at home! #WhitcoombeWinners2 weeks ago
Winner @kemptonparkrace thanks to the game Golden Iris @RKingscote @WindsorHouseLam #WhitcoombeWinners2 weeks ago
RT @WindsorHouseLam: @jportmanracing what a great effort from the team to keep Golden Iris on the go all summer2 weeks ago

2 year old filly Toybox followed up a recent cracking run when finishing second by winning this novice fillies event with ease under jockey…

3yo filly Golden Iris scored her second win of the season at Kempton for owner Mary Ann Parker under a typically strong ride from Richard Ki…

3 year old colt Even Keel made all to win the £20k 8f nursery under regular rider Rob Hornby for our partnership Berkeley Racing. This was h…

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