| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Hugo Flikweert | 13 | Nene Valley | 46.32 |
| 2 | 2 | Grayson Watford | 13 | Wellingboro | 45.03 |
| 3 | 3 | James Oscroft | 13 | Northampton | 40.29 |
| 4 | 4 | Kacper Siedlak | 13 | Corby | 39.13 |
| 5 | 5 | Percy Green | 13 | Corby | 39.98 |
| 6 | 6 | Charlie Husbands | 13 | Wellingboro | 42.93 |
| 7 | 7 | Aaryan Rana | 13 | Northampton | 45.11 |
| 8 | 8 | Alex Lawrence | 13 | Daventry | 46.65 |