| B Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Emma Reid | 19 | Bangor IRL | 1:01.07 |
| 1 | 2 | Tori Sopp | 18 | Wirral Metro | 1:00.97 |
| 2 | 3 | Hanna Henderson | 16 | HPC-Ont CAN | 1:00.85 |
| 3 | 4 | Sophie Freeman | 14 | Plymouth Lea | 1:00.54 |
| 4 | 5 | Betsy Wizard | 15 | Northampton | 1:00.36 |
| 5 | 6 | Maisie Elliott | 15 | Co Leicester | 1:00.44 |
| 6 | 7 | Ally Larson | 18 | Camden Swiss | 1:00.78 |
| 7 | 8 | Kate Mills | 20 | Loughboro Un | 1:00.95 |
| 8 | 9 | Ciara Schlosshan | 17 | Co Leeds | 1:01.02 |
| 9 | 10 | Emily Haimes | 17 | Mt Kelly | 1:01.16 |