| B Final | ||||||
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 1 | Eleanor Robinson | 01 | S6 | Northampton | 1:23.34 |
| 1 | 2 | Morgan Bird | 93 | S8 | Canada | 1:11.21 |
| 2 | 3 | Tully Kearney | 97 | S9 | Boldmere | 1:06.28 |
| 3 | 4 | Stephanie Millward | 81 | S9 | Aquae Sulis | 1:06.61 |
| 4 | 5 | Rosie Bancroft | 95 | S10 | Co Oxford | 1:06.29 |
| 5 | 6 | Elena Krawzow | 93 | S13 | Germany | 1:06.58 |
| 6 | 7 | Zara Mullooly | 02 | S10 | Woking | 1:06.89 |
| 7 | 8 | Megan Richter | 00 | S9 | Orion | 1:11.37 |
| 8 | 9 | Grace Harvey | 98 | S7 | Hoddesdon | 1:19.03 |