| Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 1 | Robbie Hemmings | 04 | Poole | 52.40 |
| 1 | 2 | Jack Skerry | 04 | New Hall | 52.32 |
| 2 | 3 | Calvin Fry | 04 | Mt Kelly | 52.05 |
| 3 | 4 | Harry Nicholson | 04 | Newcastle | 51.31 |
| 4 | 5 | Alexander Painter | 04 | Millfield | 50.93 |
| 5 | 6 | Deen Ahmed | 04 | Birm'ham Uni | 51.21 |
| 6 | 7 | Michael Klimaszewski | 04 | Camden Swiss | 51.93 |
| 7 | 8 | Louis McAuliffe | 04 | Leamington | 52.10 |
| 8 | 9 | Max Elkin | 04 | Swansea Uni | 52.39 |
| 9 | 10 | Kaleb Fox-Jones | 04 | Newbury | 52.40 |