| Heat Number - 1 | ||||||
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 1 | Hayley Milne | 16 | S8 | Grantham | 1:30.12 |
| 2 | 3 | Coral Farrell | 14 | S10 | Warrington W | 1:28.92 |
| 3 | 5 | Eleanor Bamber | 19 | S10 | Glossop | 1:22.25 |
| 4 | 7 | Lily Macleod | 14 | S13 | RichmondDale | 1:21.48 |
| 5 | 6 | Jay McCabe | 13 | S9 | Derwentside | 1:19.70 |
| 6 | 4 | Ffion Butler | 17 | S9 | Shrewsbury | 1:23.12 |
| 7 | 2 | Megan Richter | 15 | S9 | Orion | 1:25.91 |