| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Evie DAVIES | 11 | Deepings | 43.72 |
| 2 | 2 | Mia TOPHAM | 11 | Louth | 43.31 |
| 3 | 3 | Amy FOSTER | 11 | Louth | 42.00 |
| 4 | 4 | Lucy BARRATT | 11 | Gainsborough | 39.97 |
| 5 | 5 | Miley RICHARDSON | 11 | Co Lincoln P | 40.47 |
| 6 | 6 | Florence HENDERSON | 11 | Lincoln Vulc | 42.74 |
| 7 | 7 | Madeleine SEAGROATT | 11 | Louth | 43.32 |
| 8 | 8 | Izabella ZANIEWSKA | 11 | Boston | 44.00 |