| Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Karolina PARKINSON | 10 | Lincoln Vulcans SC | 42.63 |
| 2 | 2 | Sophie COOKSEY | 10 | Louth Dolphins SC | 41.68 |
| 3 | 3 | Isla GRAY | 10 | Grantham SC | 40.73 |
| 4 | 4 | Skye HOLMES | 10 | Louth Dolphins SC | 38.60 |
| 5 | 5 | Isobel ALLSOP | 10 | Grantham SC | 40.04 |
| 6 | 6 | Emilie WEBB | 10 | Grantham SC | 41.20 |
| 7 | 7 | Lucy WILSON | 10 | South Lincs Competitive SC | 41.89 |