| Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Karolina PARKINSON | 10 | Lincoln Vulcans SC | 1:33.64 |
| 2 | 2 | Lucy WILSON | 10 | South Lincs Competitive SC | 1:29.29 |
| 3 | 3 | Isla GRAY | 10 | Grantham SC | 1:28.25 |
| 4 | 4 | Skye HOLMES | 10 | Louth Dolphins SC | 1:26.52 |
| 5 | 5 | Emilie WEBB | 10 | Grantham SC | 1:26.95 |
| 6 | 6 | Isobel ALLSOP | 10 | Grantham SC | 1:28.25 |
| 7 | 7 | Sophie COOKSEY | 10 | Louth Dolphins SC | 1:31.10 |