| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Cameron JAMISON | 10 | Lincoln TSA | 50.60 |
| 2 | 2 | Tom BARRATT | 10 | Gainsborough | 50.22 |
| 3 | 3 | Seth CLAYTON | 11 | South Lincs | 48.63 |
| 4 | 4 | Toby EDMONDSON | 11 | Grantham | 45.62 |
| 5 | 5 | Joseph WRIGHT | 11 | Gainsborough | 45.80 |
| 6 | 6 | Derrin BROCKLEBANK | 11 | Grantham | 48.98 |
| 7 | 7 | Inambao LUNGU | 11 | Lincoln Vulc | 50.29 |
| 8 | 8 | Henry EVANS | 11 | Louth | 50.75 |