| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Warren Cannon | 18 | Bath Univ | 52.49 |
| 2 | 2 | Matthew Zammit | 17 | Plymouth Lea | 52.31 |
| 3 | 3 | Jack Smith | 16 | Plymouth Lea | 51.91 |
| 4 | 4 | Benjamin Proud | 18 | Plymouth Lea | 50.13 |
| 5 | 5 | Aaron Rickhuss | 19 | Plymouth Lea | 50.95 |
| 6 | 6 | Joseph Patching | 18 | Plymouth Lea | 52.19 |
| 7 | 7 | James Clark | 17 | Swindon Dolp | 52.44 |
| 8 | 8 | Daniel Jones | 19 | Plymouth Lea | 52.68 |