| B Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 1 | 1 | Charlotte Bianchi | 06 | Co Sheffield | 1:11.39 |
| 2 | 2 | Gabrielle Idle-Beavers | 08 | Mt Kelly | 1:11.13 |
| 3 | 3 | Gillian Kay Davey | 01 | Lboro Uni | 1:11.07 |
| 4 | 4 | Theodora Taylor | 09 | Torfaen D | 1:09.99 |
| 5 | 5 | Kameliya Stoimenova | 03 | Swansea Uni | 1:11.00 |
| 6 | 6 | Maia Hall | 02 | N & D PP SC | 1:11.10 |
| 7 | 7 | Charlotte Hardy | 07 | Millfield | 1:11.39 |
| 8 | 8 | Carys O'Reilly | 03 | Co Sheffield | 1:11.44 |