| Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Isabella WALTER | 09 | Louth Dolphins SC | 1:24.66 |
| 2 | 2 | Megan BROWN | 09 | Grantham SC | 1:23.14 |
| 3 | 3 | Helena FIELD | 09 | Louth Dolphins SC | 1:22.91 |
| 4 | 4 | Alice-Mae DOWNS | 09 | Lincoln Vulcans SC | 1:19.90 |
| 5 | 5 | Sigourney BOLTON | 09 | South Lincs Competitive SC | 1:20.87 |
| 6 | 6 | Grace MACDONALD | 09 | Grantham SC | 1:22.92 |
| 7 | 7 | Lilli-Rose CARR | 09 | City of Linc Pentaqua SC | 1:24.42 |
| 8 | 8 | Sophie WARD | 09 | Grantham SC | 1:24.82 |