| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Henry Norman | 16 | Bromley | 54.90 |
| 1 | 2 | Finn Ripley | 16 | Middlesboro | 54.70 |
| 2 | 3 | Tom Hawkins | 16 | RTW Monson | 54.56 |
| 3 | 4 | Frederick Jones | 16 | RTW Monson | 54.18 |
| 4 | 5 | Amel Delanin | 16 | Bromley | 53.44 |
| 5 | 6 | Ethan Richards-Knight | 16 | Chalfont | 53.81 |
| 6 | 7 | Louka Bramwell | 16 | Co Coventry | 54.46 |
| 7 | 8 | Riley Hall | 16 | Co Cambridge | 54.64 |
| 8 | 9 | Leo Nichols | 16 | Bracknell | 54.82 |
| 9 | 10 | Joseph Adams | 16 | Windsor | 54.99 |