| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Evie DAVIES | 12 | Deepings | 1:14.72 |
| 2 | 2 | Lucy BARRATT | 12 | Gainsborough | 1:13.34 |
| 3 | 3 | Catherine SINCLAIR | 12 | Co Lincoln P | 1:12.57 |
| 4 | 4 | Lily-May CLARK | 12 | Grantham | 1:09.55 |
| 5 | 5 | Miley RICHARDSON | 12 | Co Lincoln P | 1:11.66 |
| 6 | 6 | Madeleine SEAGROATT | 12 | Louth | 1:12.62 |
| 7 | 7 | Thea WHOTTON | 12 | Louth | 1:14.64 |
| 8 | 8 | Alexandra BUDREVICIUTE | 12 | Co Lincoln P | 1:14.80 |