2023 - Monster Mountain Entry List - BW85
| Name | Rider No | Sponsor | Team | Hometown | Manufacturer |
| Blake Ward-Clarke | 1 | GRT IMPACT KTM | GRT IMPACT KTM | Bedfordshire | KTM |
| Travis Bixby | 8 | PP SPORTS | Hertfordshire | KTM | |
| Harry Lee | 17 | DIRT STORE | GRT IMPACT KTM | West Sussex | KTM |
| Lewis Spratt | 21 | MCCULLAGHS CENTRA\TODDS LEAP | County Tyrone | KTM | |
| Kole Nally | 24 | V4 TRAINING\P O NEILL CARPENTRY | Wicklow | KTM | |
| Charlie Richmond | 30 | JP | Berkshire | KTM | |
| Harley O'Callaghan | 79 | London | KTM | ||
| Jaden Hill | 117W | MX SOLUTIONS | Abertawe | KTM | |
| Christopher Brindley | 142W | BBR | Gloucestershire | KTM | |
| Kameron Greenhalgh | 171 | GREENHALGH REMOVALS | Lancashire | HUS | |
| Jamie Keith | 184 | MBRPX MCGUIGAN | Cumbria | KTM | |
| Andrew Piggford | 222W | JTL\MR DIG GROUNDWORKS LTD | Durham | GAS | |
| Lucas Moncrieff | 310 | PHEONIX TOOLS EVENSTROKES KAWASAKI | PHEONIX TOOLS EVENSTROKES KAWASAKI | Lancashire | KAW |
| Finley Pickering | 357 | MR TS RACING | Cumbria | KTM | |
| Drew Stock | 418 | MADISON MOTOVERDE MAD4MOTOCROSS | Nothamptonshire | GAS | |
| Josh Vail | 479 | SJP MOTO | SJP AUTO | North Lincolnshire | KTM |
| Stanley Siebert | 512 | COLES PLASTERING | Somerset | KTM | |
| Hayden Statt | 548 | MANCHESTER MOTORCYCLES | Durham | KTM |