| B Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Olivia HANN | 06 | Repton | 1:07.63 |
| 2 | 2 | Eleanor BROUGHTON | 06 | Repton | 1:07.36 |
| 3 | 3 | Amber RANSON | 05 | Co Manch Aq | 1:06.85 |
| 4 | 4 | Naeve POUNTNEY | 04 | Bath Univ | 1:05.12 |
| 5 | 5 | Elise COLLINS | 02 | Chesterfield | 1:05.97 |
| 6 | 6 | Rosie WHITTEN | 07 | Swim Belfast | 1:07.07 |
| 7 | 7 | Katey DALLOLIO | 04 | Andover | 1:07.48 |
| 8 | 8 | Isabella SHERING | 06 | Co Sheffield | 1:07.73 |