| B Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Mimi Morley Iszatt | 15 | Co Oxford | 28.80 |
| 1 | 2 | Charlotte Evans | 21 | Loughboro Un | 28.68 |
| 2 | 3 | Hannah Slater | 16 | Newcastle | 28.67 |
| 3 | 4 | Jane Brown | 18 | Newcastle | 28.63 |
| 4 | 5 | Leah Whittaker | 13 | Ealing | 28.48 |
| 5 | 6 | Chiara Tommasello | 14 | Co Manch Aq | 28.55 |
| 6 | 7 | Kate Mills | 20 | Loughboro Un | 28.67 |
| 7 | 8 | Katelyn Bergin | 17 | Mt Kelly | 28.68 |
| 8 | 9 | Athena Clayson | 17 | Mt Kelly | 28.70 |
| 9 | 10 | Sophie Maguire | 17 | Mid Sussex | 28.82 |