| Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Kai WATSON | 12 | Deepings | 44.30 |
| 2 | 2 | Oliver CLARKE | 12 | Deepings | 41.88 |
| 3 | 3 | Oliver WILKINSON | 12 | Lincoln Vulc | 41.66 |
| 4 | 4 | Francesco MONACO | 12 | South Lincs | 41.33 |
| 5 | 5 | Cole COOPER | 12 | Co Lincoln P | 41.44 |
| 6 | 6 | Luca HALLAM | 12 | Grantham | 41.69 |
| 7 | 7 | Samuel NICHOLS | 12 | Grantham | 43.82 |
| 8 | 8 | Leo OLDERSHAW | 12 | South Lincs | 44.74 |