| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Erin ARCHER | 13 | Co Lincoln P | 1:20.19 |
| 2 | 2 | Ellena HOWITT | 13 | Grantham | 1:19.67 |
| 3 | 3 | Amy PALMER | 13 | Co Lincoln P | 1:19.28 |
| 4 | 4 | Maisie MATTHEWS | 13 | Louth | 1:12.35 |
| 5 | 5 | Lucy WILLATTS | 13 | Grantham | 1:19.06 |
| 6 | 6 | Amy TAYLOR | 13 | Grantham | 1:19.52 |
| 7 | 7 | Amelia BIRD | 13 | Skegness | 1:20.07 |
| 8 | 8 | Darcey WOOD | 13 | Grantham | 1:22.18 |