| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Alec White | 17 | Exeter City | 56.52 |
| 1 | 2 | James Watson | 18 | Plymouth Lea | 55.98 |
| 2 | 3 | Santos Villalon | 17 | Millfield | 55.17 |
| 3 | 4 | Ben Hooper | 18 | Hillingdon | 54.96 |
| 4 | 5 | Lewis Fraser | 18 | Swansea Aq | 54.65 |
| 5 | 6 | Sam Dailley | 17 | Mt Kelly | 54.91 |
| 6 | 7 | Archie Goodburn | 17 | Warrender Ba | 55.05 |
| 7 | 8 | Jakob Goodman | 18 | Millfield | 55.35 |
| 8 | 9 | James Woodward | 18 | Hatfield | 56.44 |
| 9 | 10 | Lewis Kerrod | 18 | Co Leicester | 56.53 |