| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | James Wilson | 18 | Plymouth Lea | 53.91 |
| 1 | 2 | Daniel Jones | 22 | Plymouth Lea | 53.45 |
| 2 | 3 | John Slater | 19 | Plymouth Lea | 52.97 |
| 3 | 4 | Thomas Fannon | 17 | Plymouth Lea | 52.39 |
| 4 | 5 | Darren Lim | 17 | Plymouth Lea | 51.03 |
| 5 | 6 | Joseph Hulme | 18 | Plymouth Lea | 52.25 |
| 6 | 7 | Samuel Irvine | 18 | Millfield | 52.67 |
| 7 | 8 | Thomas Sinclair | 17 | Aquae Sulis | 53.19 |
| 8 | 9 | Jeffrey Chen | 19 | Millfield | 53.75 |
| 9 | 10 | Thomas Kingham | 17 | Millfield | 53.93 |