| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Toby EDMONDSON | 10 | Grantham | 50.66 |
| 2 | 2 | Oscar WOOD | 11 | Lincoln Vulc | 49.65 |
| 3 | 3 | Barnaby DURANT | 11 | Grantham | 48.75 |
| 4 | 4 | Henry DOLAN | 11 | Grantham | 45.25 |
| 5 | 5 | Bertie ROSE | 11 | Lincoln Vulc | 46.86 |
| 6 | 6 | Dan PALMER | 11 | Co Lincoln P | 49.42 |
| 7 | 7 | Derrin BROCKLEBANK | 10 | Grantham | 50.33 |
| 8 | 8 | Kai HILAROWICZ | 11 | Co Lincoln P | 51.11 |