| | Heat Number - 1 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 3 | 1 | Alexandra HOLT | 11 | Co Cambridge | 3:52.11 |
| 4 | 2 | Ryanne BAILEY | 10 | Co Cambridge | 3:44.89 |
| 5 | 3 | Rebecca MORGAN | 12 | Co Cambridge | 3:36.92 |
| 6 | 4 | Katie-jane ISBISTER | 12 | Co Cambridge | 3:30.36 |
| | Heat Number - 2 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 6 | Georgia CRAWFORD | 11 | Co Cambridge | 3:17.99 |
| 2 | 8 | Alice SHARPE | 13 | Co Cambridge | 3:05.00 |
| 3 | 10 | Fay WESTWOOD | 15 | Co Cambridge | 3:02.81 |
| 4 | 12 | Ellie WINTER | 12 | Co Cambridge | 2:59.03 |
| 5 | 11 | Sophie LANHAM | 14 | Co Cambridge | 3:00.00 |
| 6 | 9 | Millie ROSE | 12 | Co Cambridge | 3:02.88 |
| 7 | 7 | Emma STRUTHERS | 13 | Co Cambridge | 3:12.83 |
| 8 | 5 | Sophie LANKFORD | 12 | Co Cambridge | 3:25.13 |
| | Heat Number - 3 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 14 | Holly REES | 14 | Co Cambridge | 2:53.10 |
| 2 | 16 | Amy DIVE | 15 | Co Cambridge | 2:52.51 |
| 3 | 18 | Georgina ROUGHSEDGE | 14 | Co Cambridge | 2:44.00 |
| 4 | 20 | Soraya SASSANI | 15 | Co Cambridge | 2:40.00 |
| 5 | 19 | Isabella THOMSON | 15 | Co Cambridge | 2:40.85 |
| 6 | 17 | Sarah BRENNAN | 14 | Co Cambridge | 2:52.47 |
| 7 | 15 | Zoe OTHIENO | 14 | Co Cambridge | 2:52.60 |
| 8 | 13 | Victoria WAY | 15 | Co Cambridge | 2:54.96 |