| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Iestyn William COLE | 17 | Plymouth Lea | 52.09 |
| 2 | 2 | Luke ROBINS | 17 | Millfield | 51.89 |
| 3 | 3 | Thomas SINCLAIR | 18 | Bath Univ | 51.78 |
| 4 | 4 | Louis BARKER | 17 | Millfield | 51.35 |
| 5 | 5 | Thomas KINGHAM | 18 | Millfield | 51.65 |
| 6 | 6 | Charlie PULLAN | 18 | Bath Univ | 51.81 |
| 7 | 7 | Brodie WILLIAMS | 17 | Millfield | 52.08 |
| 8 | 8 | Oliver MALTBY | 19 | Bath Univ | 52.29 |