| B Final | ||||||
| Lane | Comp.No. | Name | YoB | Cat | Club/Country | Time |
| 0 | 1 | Julia Castello Farre | 90 | S6 | Spain | 1:31.25 |
| 1 | 2 | Chikako Ono | 94 | S11 | Japan | 1:27.33 |
| 2 | 3 | Stephanie Slater | 91 | S8 | Preston | 1:20.86 |
| 3 | 4 | Elizabeth Smith | 96 | S9 | USA | 1:14.84 |
| 4 | 5 | Valeriia Shabalina | 95 | S14 | Russia | 1:11.79 |
| 5 | 6 | Tully Kearney | 97 | S10 | Boldmere | 1:14.46 |
| 6 | 7 | Elizabeth Simpkin | 94 | S9 | Preston | 1:18.55 |
| 7 | 8 | Jessica Long | 92 | S8 | USA | 1:23.36 |
| 8 | 9 | Susannah Rodgers | 83 | S7 | Otter | 1:30.29 |