| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 1 | Nicole Lambert | 10 | RichmondDale | 4:05.91 |
| 3 | 3 | Rebecca Wilkin | 11 | Northall'ton | 3:50.36 |
| 4 | 2 | Holly Robinson | 13 | Northall'ton | 3:56.23 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 5 | Maisie Hart | 12 | Northall'ton | 2:52.82 |
| 3 | 7 | Rachael Murray | 14 | Northall'ton | 2:47.38 |
| 4 | 6 | Rose Jolly | 13 | Northall'ton | 2:48.23 |
| 5 | 4 | Izzy Isherwood-Nesom | 10 | Northall'ton | 3:42.42 |