Twenty-one of his career victories have come in the top races in Britain — the kind that matter most and that trainers spend entire careers chasing. In 2025 alone he has landed three of them: at Ascot in June, York in August, and Newmarket in September. Those three venues are the jewels of British racing, and winning at all three in a single season is the sort of achievement that puts a trainer firmly in the conversation among the sport's elite. Four years in, that is extraordinary progress.
His most trusted partner in the saddle is Kieran Shoemark, and between them they have built a formidable combination. From 186 rides together they have won 27 races — roughly 1 in every 7 — and when a trainer and jockey click like that, there is clearly a shared understanding of how horses should be ridden and prepared. It is a partnership worth watching whenever the two names appear together on a racecard.
Walker also has a quiet edge in certain conditions that is worth knowing about. On very wet, muddy ground — the sort of day when most racegoers are huddled under umbrellas wondering why they came — his horses win 3 from every 14 races, a rate of 21%, or roughly 1 in 5. That is significantly better than his overall average, suggesting he is comfortable preparing horses that handle testing conditions. At Hamilton Park specifically, he has turned out 3 winners from just 8 runners, which is a remarkable hit rate at a track that many southern-based trainers treat as an afterthought. Three from eight is not luck — that is a trainer who knows what he is doing at that venue.
His standout partnership with the horse Moonshine — 1 win from 4 races together — has yet to fully ignite, but with three top-level victories in 2025 and a career still in its early chapters, Walker looks like a trainer building something serious.
| Course | Races | Wins | Win rate |
|---|---|---|---|
| Kempton Park | 51 | 5 | 9.8% |
| Haydock Park | 42 | 9 | 21.4% |
| Newmarket | 39 | 3 | 7.7% |
| Newbury | 36 | 4 | 11.1% |
| Lingfield Park | 35 | 7 | 20% |
| Newcastle | 32 | 3 | 9.4% |
| York | 30 | 3 | 10% |
| Ascot | 28 | 3 | 10.7% |
| Southwell | 24 | 4 | 16.7% |
| Goodwood | 23 | 2 | 8.7% |
| Doncaster | 22 | 4 | 18.2% |
| Wolverhampton | 19 | 2 | 10.5% |
| Salisbury | 16 | 2 | 12.5% |
| Nottingham | 15 | 3 | 20% |
| Great Yarmouth | 15 | 0 | 0% |
| Ffos Las | 13 | 3 | 23.1% |
| chelmsford | 13 | 2 | 15.4% |
| Redcar | 13 | 2 | 15.4% |
| Sandown Park | 12 | 2 | 16.7% |
| Windsor | 9 | 1 | 11.1% |
| Hamilton Park | 8 | 3 | 37.5% |
| Thirsk | 8 | 2 | 25% |
| Leicester | 7 | 0 | 0% |
| Chester | 6 | 0 | 0% |
| meydan | 5 | 3 | 60% |
| Epsom Downs | 5 | 1 | 20% |
| Pontefract | 4 | 0 | 0% |
| Ayr | 4 | 0 | 0% |
| Bath | 3 | 1 | 33.3% |
| Chepstow | 3 | 0 | 0% |
| Catterick Bridge | 2 | 1 | 50% |
| Beverley | 2 | 0 | 0% |
| Wetherby | 2 | 0 | 0% |
| The Curragh | 2 | 0 | 0% |
| Musselburgh | 1 | 0 | 0% |
| Carlisle | 1 | 0 | 0% |