| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Georgina Beeby | 15 | Kettering | 3:17.10 |
| 4 | 3 | Riley Weber | 13 | Corby | 3:12.00 |
| 5 | 2 | Bella Gipson | 14 | Corby | 3:17.00 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Vida Coulson | 13 | Northampton | 3:03.10 |
| 2 | 6 | Georgia Parker | 15 | Corby | 2:53.50 |
| 3 | 8 | Elisa Giraud | 14 | Corby | 2:43.20 |
| 4 | 10 | Holly Coleman | 15 | Corby | 2:28.00 |
| 5 | 9 | Phillippa Cutmore | 14 | Corby | 2:36.48 |
| 6 | 7 | Kimberley Hayes | 15 | Northampton | 2:44.56 |
| 7 | 5 | Isabelle Pawlowski | 14 | Corby | 3:00.20 |