EVENT 121 Women 11 Yrs/Over 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Eveline Gaydon | 13 | teamipswich | 20:14.70 |
| 2 | 4 | Hannah Lovelock | 14 | Hitchin | 20:01.07 |
| 3 | 6 | Paige Walker | 16 | Flitwick | 19:44.60 |
| 4 | 8 | Gabriella Troman | 13 | Colchester | 19:34.14 |
| 5 | 7 | Abigail Riches | 14 | Norwich Swan | 19:35.50 |
| 6 | 5 | Amelia Saunders | 14 | Leiston | 20:00.30 |
| 7 | 3 | Kiera Broad | 14 | West Suffolk | 20:10.10 |
| 8 | 1 | Lois Smith | 12 | Basildon Ph | 20:21.05 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Jasmine Hall | 12 | Basildon Ph | 19:27.24 |
| 2 | 12 | Amelie Crabb | 15 | teamipswich | 19:03.80 |
| 3 | 14 | Lyla Howard | 15 | Team Luton | 18:58.00 |
| 4 | 16 | Camille Vannier | 15 | Hatfield | 18:51.84 |
| 5 | 15 | Ella Dawson | 14 | Chelmsford | 18:56.85 |
| 6 | 13 | Romilly Marks | 16 | Newmarket | 19:00.90 |
| 7 | 11 | Esmie Kidman | 16 | West Norfolk | 19:16.10 |
| 8 | 9 | Olivia Clarke | 16 | Chelmsford | 19:33.43 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Weronika Mikolajewska | 14 | Co Peterboro | 18:41.52 |
| 2 | 20 | Aislin Foley-Wright | 15 | Basildon Ph | 18:38.72 |
| 3 | 22 | Lucy Young | 17 | Modernian | 18:27.30 |
| 4 | 24 | Madelyn Latimer-Hicks | 18 | St Felix Sch | 18:17.20 |
| 5 | 23 | Francesca Baber | 16 | Flitwick | 18:26.70 |
| 6 | 21 | Lexie O'Connor | 15 | Basildon Ph | 18:28.79 |
| 7 | 19 | Lexie Goodman | 15 | Basildon Ph | 18:39.57 |
| 8 | 17 | Menna Walmsley | 18 | Team Luton | 18:48.30 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 26 | Yoshi Eschen | 22 | Co Cambridge | 18:12.41 |
| 2 | 28 | Olivia Church | 16 | Thurrock | 18:11.17 |
| 3 | 30 | Chloe Barnard | 13 | Basildon Ph | 17:49.35 |
| 4 | 32 | Harriet Salisbury | 18 | Co Peterboro | 17:28.00 |
| 5 | 31 | Alexa Mann | 16 | Chelmsford | 17:46.77 |
| 6 | 29 | Cait Cotter | 15 | Chelmsford | 18:02.70 |
| 7 | 27 | Gracie Comitti | 15 | Basildon Ph | 18:12.37 |
| 8 | 25 | Sophie Dowding | 15 | teamipswich | 18:13.60 |