| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Freddie HIRST | 12 | Grantham | 39.06 |
| 2 | 2 | Hayden WHITTAKER | 12 | Louth | 38.87 |
| 3 | 3 | Ethan LUCY | 12 | South Lincs | 38.67 |
| 4 | 4 | Thomas VERE | 12 | South Lincs | 37.07 |
| 5 | 5 | Benjamin NOAKES | 12 | Louth | 37.17 |
| 6 | 6 | Toby EDMONDSON | 12 | Grantham | 38.77 |
| 7 | 7 | Derrin BROCKLEBANK | 12 | Grantham | 39.02 |
| 8 | 8 | Ksawery WRONSKI | 12 | Co Lincoln P | 40.10 |