| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 1 | Alexander LVOV | 11 | Gwich Royals | 47.08 |
| 1 | 2 | Ayaan MOUKARZEL | 11 | Beckenham | 46.54 |
| 2 | 3 | Harry GOULD | 11 | Gwich Royals | 45.96 |
| 3 | 4 | William CRAGGS | 11 | Gwich Royals | 44.62 |
| 4 | 5 | Parker POLLARD | 11 | Thanet Swim | 43.14 |
| 5 | 6 | Otto SAUNDERS | 11 | Beckenham | 43.43 |
| 6 | 7 | Jun YANG | 11 | White Oak | 44.86 |
| 7 | 8 | Hayden YIP | 11 | Bromley | 46.01 |
| 8 | 9 | Albert MACK | 11 | Gwich Royals | 46.84 |
| 9 | 10 | Orlando CLARY | 11 | RTW Monson | 47.15 |