| Equid | Horse Name ▼ | Breed | Age | Gender | Color | Discipline | Owner |
|---|---|---|---|---|---|---|---|
| 429525C | Sivekar | Arabian | SY25 (3yo) | Mare | Grey | AR | Morrigan |
| 013114C | Siuan | Irish Draught | SY14 (14yo) | Mare | Chestnut | HU | Morrigan |
| 089416S | Sitting Duck | Irish Sport Horse | SY16 (12yo) | Gelding | Chestnut | HU | Morrigan |
| 479321C | Sitara | Marwari | SY21 (7yo) | Mare | Bay | TC | The Orchard |
| 379819C | Sister June | Carolina Marsh Tacky | SY19 (9yo) | Mare | Bay | WE | Manders |
| 072215S | Sister Ire | Irish Sport Horse | SY15 (13yo) | Mare | Chestnut | EV | Morrigan |
| 361198B | Siroy Kumudinee | Marwari | SY20 (8yo) | Mare | Palomino | TC | Niamh |
| 421723B | Siren Glow | Thoroughbred | SY24 (4yo) | Mare | Cremello Sabino | FR | Lissa |
| 453621C | Sir Wallace | Shire | SY21 (7yo) | Stallion | Grey | DV | Soleil |
| 286021B | Sir Spotticus | Noriker | SY21 (7yo) | Stallion | Bay Leopard | CD | Jen |
| 230517C | Singin The Blues | Paint Horse | SY17 (11yo) | Stallion | Blue Roan Tovero | WS | Manders |
| 014820C | Sindragosa | Thoroughbred | SY20 (8yo) | Mare | Black | CC | Manders |
| 304719C | Simplicity SW | Hanoverian | SY19 (9yo) | Mare | Chestnut | HU | Izabella |
| 392522B | Simpatico M | Lusitano | SY22 (6yo) | Mare | Buckskin | WE | Merry |
| 249722C | Simon Says | Paint Horse | SY22 (6yo) | Stallion | Palomino Tobiano | WS | Morrigan |
| 526228B | Simon Has Abs CR | Paint Horse | SY28 (0yo) | Stallion | Bay Roan Tovero | SR | Morrigan |
| 198117C | Silverlion Flowerling | Welsh Pony | SY17 (11yo) | Mare | Grey | HU | Morrigan |
| 081114S | Silver Storm | British Spotted Pony | SY14 (14yo) | Mare | Grey Fewspot | DV | Jen |
| 417422B | Silver Songbird | Thoroughbred | SY23 (5yo) | Mare | Grey | FR | Morrigan |
| 053718B | Silver Song | Thoroughbred | SY18 (10yo) | Mare | Grey | JP | Manders |
| 173413C | Silver Phoenix | Thoroughbred | SY13 (15yo) | Mare | Grey | HU | Manders |
| 079312C | Silver Moon | Morgan | SY12 (16yo) | Mare | Silver Buckskin | HU | Manders |
| 187914C | Silver Mirage | Holsteiner | SY14 (14yo) | Stallion | Grey | EV | Lorelei |
| 072715S | Silver Lining | Dales Pony | SY15 (13yo) | Stallion | Grey | CD | Manders |
| 109620B | Silver Ivy | Thoroughbred | SY20 (8yo) | Mare | Buckskin Rabicano | FR | Lissa |
