EVENT 101 Girls Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Eleanor Trahearn | 12 | Co Leicester | 7:56.04 |
| 4 | 2 | Joanne Mitchell | 12 | Co Leicester | 7:36.23 |
| 5 | 3 | Teagan Payne | 10 | Northampton | 7:15.67 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 4 | Isabella Di Pane | 13 | Northampton | 7:00.77 |
| 3 | 5 | Taryn Payne | 12 | Northampton | 6:58.78 |
| 4 | 6 | Phebe Adams | 12 | Northampton | 6:56.90 |
| 5 | 7 | Amy McVey | 13 | Northampton | 6:55.67 |
| 6 | 8 | Janie Finch | 11 | Co Leicester | 6:25.32 |
| 7 | 9 | Hoi-Kay Wilson | 16 | Leicester Ne | 6:19.15 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Amelie Birkett | 14 | Co Leicester | 5:50.66 |
| 2 | 13 | Poppy Scotchbrook | 14 | Co Leicester | 5:44.23 |
| 3 | 15 | Alyssa Lo | 13 | Co Leicester | 5:37.82 |
| 4 | 17 | Carys O'Reilly | 18 | Co Leicester | 5:03.65 |
| 5 | 16 | Alice Streeter | 15 | Co Leicester | 5:15.39 |
| 6 | 14 | Jessica Oxley | 12 | Co Leicester | 5:39.66 |
| 7 | 12 | Anna Johnson | 16 | Northampton | 5:49.55 |
| 8 | 10 | Evie Bevan | 12 | Co Leicester | 6:06.00 |