| Equid | Horse Name ▲ | Breed | Age | Gender | Color | Discipline | Owner |
|---|---|---|---|---|---|---|---|
| 211015C | Mr Pickles | Shetland Pony | SY15 (12yo) | Stallion | Palomino Tobiano | DV | Soleil |
| 067620S | Mr Potato Head | Thoroughbred | SY20 (7yo) | Stallion | Chestnut | FR | Lissa |
| 192511C | Mr Waylon | Quarab | SY11 (16yo) | Stallion | Bay Dun | EN | Manders |
| 407923B | Mt Pinatubo M | Czech Warmblood | SY23 (4yo) | Stallion | Black | EV | Manders |
| 054119C | Muad'Dib | Arabian | SY19 (8yo) | Gelding | Chestnut | EV | Morrigan |
| 326221B | Much Ado About Nothing | Thoroughbred | SY21 (6yo) | Mare | Black | CC | Rhianon |
| 336114C | Mudita | Marwari | SY14 (13yo) | Mare | Buckskin | EN | Rhianon |
| 437023C | Mulga Magic | Quarter Horse | SY23 (4yo) | Mare | Dunskin | SR | Jewel |
| 184212C | Munchkin McFluff | Shetland Pony | SY12 (15yo) | Stallion | Black Tobiano | PR | Lissa |
| 186512C | Munchkin McMoo | Shetland Pony | SY12 (15yo) | Mare | Grey | PR | Lissa |
| 199218B | Munin | Quarab | SY18 (9yo) | Stallion | Smoky Black Tobiano | EN | Rhianon |
| 059216S | Murcielago | Iberian Warmblood | SY16 (11yo) | Stallion | Black | WE | The Orchard |
| 154119C | Murder On The Dancefloor | Paint Horse | SY19 (8yo) | Mare | Bay Tobiano | WW | Merry |
| 360723B | MurderOnTheDancefloor | Thoroughbred | SY23 (4yo) | Mare | Chestnut | DG | Morrigan |
| 173213C | Music Man | Thoroughbred | SY13 (14yo) | Stallion | Cremello | HU | Manders |
| 108720B | Musta Made Me | Thoroughbred | SY20 (7yo) | Mare | Black Overo | FR | Lissa |
| 027612B | Mustang Sally | Thoroughbred | SY12 (15yo) | Mare | Bay Overo Sabino | EV | Lissa |
| 223521B | My Bad | Appaloosa | SY21 (6yo) | Mare | Blue Roan Blanket | SR | Lissa |
| 238022C | My Chemical Romance | Thoroughbred | SY22 (5yo) | Mare | Bay | EV | Morrigan |
| 220921B | My Essentials | Appaloosa | SY21 (6yo) | Mare | Blue Roan Leopard | SR | Lissa |
| 046614C | My Fair Lady | American Saddlebred | SY14 (13yo) | Mare | Bay Tobiano | JP | Manders |
| 193913C | My Mane Man | Irish Cob | SY13 (14yo) | Stallion | Silver Black Sabino | DV | Rhianon |
| 043016C | My Sharona | Quarter Pony | SY16 (11yo) | Mare | Bay | WS | Soleil |
| 334821C | My Third Leg | Paint Horse | SY21 (6yo) | Stallion | Red Roan Overo | WW | Manders |
| 204316C | My Wish Came True | Appendix Quarter Horse | SY16 (11yo) | Mare | Palomino | WW | Jewel |
