| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 1 | Poppy BATEY | 13 | Dronfield | 4:30.00 |
| 3 | 3 | Olivia ASTLEY | 14 | Dronfield | 4:15.00 |
| 4 | 2 | Isabelle ASTLEY | 11 | Dronfield | 4:30.00 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 5 | Phoebe SAMPSON | 12 | Dronfield | 4:00.00 |
| 2 | 7 | Daisy WILSON | 12 | Dronfield | 3:32.90 |
| 3 | 9 | Jessica ALLEN | 15 | Dronfield | 3:16.61 |
| 4 | 8 | Rebecca CLAY | 14 | Dronfield | 3:17.98 |
| 5 | 6 | Lucy HALLAM | 12 | Dronfield | 3:55.50 |
| 6 | 4 | Mabel ROBERTSON | 11 | Dronfield | 4:12.00 |