| Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Luca HALLAM | 12 | Grantham SC | 45.67 |
| 2 | 2 | Francesco MONACO | 12 | South Lincs Competitive SC | 42.36 |
| 3 | 3 | Oliver WILKINSON | 12 | Lincoln Vulcans SC | 41.77 |
| 4 | 4 | Stanley THURLOW | 12 | Lincoln Vulcans SC | 41.11 |
| 5 | 5 | Samuel NICHOLS | 12 | Grantham SC | 41.69 |
| 6 | 6 | Jonathan GBYLICZEK | 12 | Lincoln Vulcans SC | 42.01 |
| 7 | 7 | Oliver CLARKE | 12 | Deepings SC | 44.36 |
| 8 | 8 | Leo OLDERSHAW | 12 | South Lincs Competitive SC | 46.40 |