| | Heat Number - 1 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 2 | Katie-jane ISBISTER | 12 | Co Cambridge | 1:57.29 |
| 2 | 4 | Emma STRUTHERS | 13 | Co Cambridge | 1:38.15 |
| 3 | 6 | Sophie LANKFORD | 12 | Co Cambridge | 1:35.35 |
| 4 | 8 | Sarah BRENNAN | 14 | Co Cambridge | 1:29.66 |
| 5 | 7 | Ana D'ESCRIVAN-NOTT | 13 | Co Cambridge | 1:35.00 |
| 6 | 5 | Holly REES | 14 | Co Cambridge | 1:35.80 |
| 7 | 3 | Georgia CRAWFORD | 11 | Co Cambridge | 1:40.00 |
| 8 | 1 | Laura WEISE | 16 | Co Cambridge | 2:00.00 |
| | Heat Number - 2 | | | |
| Lane | Comp.No. | __________Name__________ | AaD | Club/Country | Time |
| 1 | 10 | Ellie WINTER | 12 | Co Cambridge | 1:26.61 |
| 2 | 12 | Sophie LANHAM | 14 | Co Cambridge | 1:20.67 |
| 3 | 14 | Charlotte BEGG | 13 | Co Cambridge | 1:18.17 |
| 4 | 16 | Soraya SASSANI | 15 | Co Cambridge | 1:08.00 |
| 5 | 15 | Isabella THOMSON | 15 | Co Cambridge | 1:13.17 |
| 6 | 13 | Georgina ROUGHSEDGE | 14 | Co Cambridge | 1:20.53 |
| 7 | 11 | Zoe OTHIENO | 14 | Co Cambridge | 1:25.15 |
| 8 | 9 | Millie ROSE | 12 | Co Cambridge | 1:27.19 |