| B Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 2 | Jemimah Berkeley | 13 | RTW Monson | 1:12.78 |
| 2 | 3 | Maia Hall | 15 | Ellesmere Co | 1:12.51 |
| 3 | 4 | Rebecca Clynes | 15 | Co Leeds | 1:12.29 |
| 4 | 5 | Laura Kinley | 21 | Loughboro Un | 1:12.13 |
| 5 | 6 | Layla Black | 17 | Co Leeds | 1:12.20 |
| 6 | 7 | Rachel Taylor | 17 | Newcastle | 1:12.44 |
| 7 | 8 | Lily Booker | 16 | Co Bristol | 1:12.67 |
| 8 | 9 | Rebecca Burton | 19 | Loughboro Un | 1:12.88 |