| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | George White | 16 | West Dorset | 59.11 |
| 2 | 2 | Felix Merritt | 16 | Poole | 57.38 |
| 3 | 3 | Max Leigh | 16 | Blandford | 56.78 |
| 4 | 4 | Charlie Meek | 16 | Poole | 53.84 |
| 5 | 5 | Max Looker | 16 | Poole | 56.09 |
| 6 | 6 | Zackary Studley | 16 | Poole | 57.11 |
| 7 | 7 | Oliver Slade | 16 | West Dorset | 58.31 |
| 8 | 8 | Alexander Marchant | 16 | Poole | 1:00.22 |