| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Alexander Stevenson | 14 | Nene Valley | 43.13 |
| 2 | 2 | Sui Chun Yip | 14 | Corby | 42.49 |
| 3 | 3 | Lucas Poole | 14 | Northampton | 39.10 |
| 4 | 4 | Harry Langstone | 14 | Kettering | 36.45 |
| 5 | 5 | Wojciech Latusek | 14 | Wellingboro | 38.68 |
| 6 | 6 | Aiden Horne | 14 | Corby | 41.84 |
| 7 | 7 | Cameron Hughes | 14 | Wellingboro | 43.05 |
| 8 | 8 | Oscar Venn | 14 | Northampton | 46.53 |