| 12th Mar 2011 | BUCS - DH Student Champs '11 | Moelfre | Senior | CUMT (Cardiff University MTB Team) | 40th | 386 | 90% | 2:38.37 |
| 19th Sep 2010 | 2010 MIJ #5 | Rheola | Senior | CUMT (Cardiff University MTB Team) | 22nd | 47 | 54% | 3:43.09 |
| 20th Jun 2010 | 2010 MIJ #3 | Moelfre | Senior | CUMT (Cardiff University MTB Team) | 12th | 26 | 56% | 2:29.79 |
| 23rd May 2010 | 2010 Caersws Cup #2 | Caersws | Senior | | 20th | 86 | 78% | 2:15.29 |
| 4th Apr 2010 | Borderline - Descent Gear Clipped In | Moelfre | Senior | CUMT (Cardiff University MTB Team) | 29th | 109 | 74% | 2:35.16 |
| 21st Mar 2010 | BUCS - Student Champs '10 | Ae Forest | Senior | CUMT (Cardiff University MTB Team) | 67th | 285 | 77% | 2:55.46 |
| 8th Sep 2002 | 2002 Dragon Downhill #11 | Mountain Ash | Youth | | 22nd | 34 | 36% | 5:05.30 |
| 7th Sep 2002 | 2002 Dragon Downhill #10 | Mountain Ash | Youth | | 18th | 31 | 43% | 4:57.57 |
| 28th Jul 2002 | 2002 Dragon Downhill #7 | Garway | Youth | | 18th | 26 | 32% | 3:17.70 |
| 27th Jul 2002 | 2002 Dragon Downhill #6 | Garway | Youth | | 24th | 27 | 12% | 3:29.98 |
| 22nd Jun 2002 | 2002 Dragon Downhill #5 | Gethin | Youth | | 24th | 33 | 28% | 6:30.59 |
| 11th May 2002 | 2002 Dragon Downhill #3 | Mountain Ash | Youth | | 13th | 17 | 25% | 4:49.21 |
William ERRINGTON
