| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Isabella Di Pane | 13 | Northampton | 3:35.62 |
| 2 | 3 | Janie Finch | 11 | Co Leicester | 3:30.09 |
| 3 | 5 | Poppy Scotchbrook | 14 | Co Leicester | 2:50.09 |
| 4 | 7 | Jessica Spragg | 17 | Northampton | 2:40.50 |
| 5 | 6 | Freya Wingfield-Dobbs | 15 | Co Leicester | 2:49.44 |
| 6 | 4 | Eleanor Trahearn | 12 | Co Leicester | 3:26.21 |
| 7 | 2 | Phebe Adams | 12 | Northampton | 3:30.67 |