| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Tom BARRATT | 11 | Gainsborough | 47.99 |
| 2 | 2 | Daniel GODDARD | 11 | Grantham | 47.86 |
| 3 | 3 | Cameron JAMISON | 11 | Lincoln TSA | 47.18 |
| 4 | 4 | Brody LENTZ | 11 | Louth | 43.37 |
| 5 | 5 | Cyril BAO | 10 | Grantham | 47.18 |
| 6 | 6 | Damir IVANOVS | 11 | Boston | 47.69 |
| 7 | 7 | Fox RICHARDSON | 10 | Co Lincoln P | 47.91 |
| 8 | 8 | Liam EDMEADES | 11 | Deepings | 48.11 |