| Heat Number - 1 | ||||||
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 2 | 1 | Maisie Summers-Newton | 15 | SB6 | Northampton | 1:36.15 |
| 3 | 3 | Danielle Hartin | 15 | SB14 | Basildon Ph | 1:18.62 |
| 4 | 5 | Rebecca Redfern | 18 | SB13 | Worcester | 1:19.02 |
| 5 | 4 | Louise Fiddes | 16 | SB14 | Hatfield | 1:18.23 |
| 6 | 2 | Charlotte Hartin | 22 | SB14 | Basildon Ph | 1:25.88 |