| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Evie TURNER | 18 | Grantham | 1:11.88 |
| 2 | 2 | Beatrice FINCH | 18 | South Lincs | 1:11.24 |
| 3 | 3 | Jessica O'HERLIHY | 18 | South Lincs | 1:09.50 |
| 4 | 4 | Alexandra BULAT | 18 | Co Lincoln P | 1:07.18 |
| 5 | 5 | Katie MALONEY | 27 | Louth | 1:08.97 |
| 6 | 6 | Grace TURNER | 17 | Grantham | 1:09.55 |
| 7 | 7 | Francesca HALLAM-STOTT | 17 | Grantham | 1:11.62 |
| 8 | 8 | Eloise WALKER | 17 | Deepings | 1:12.46 |