EVENT 201 Female 12 Yrs/Over 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Eydee CHILVERS | 14 | South Lincs | 11:11.00 |
| 2 | 4 | Sophie FOSTER | 13 | Louth | 11:06.50 |
| 3 | 6 | Marley-Rose GARRETT | 14 | Co Liverpool | 10:41.78 |
| 4 | 8 | Poppy BRIGGS | 14 | RichmondDale | 10:30.20 |
| 5 | 7 | Evie WEBSTER | 12 | Trafford Met | 10:41.60 |
| 6 | 5 | Emily WHITBY | 12 | RichmondDale | 10:56.31 |
| 7 | 3 | Elissa DRAGON | 14 | Wigan BEST | 11:09.90 |
| 8 | 1 | Livia STACEY | 12 | Co Leeds | 11:24.07 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 10 | Abigail JAMES | 15 | York City | 10:20.00 |
| 1 | 12 | Millie MCKEOWN | 15 | Wirral Metro | 10:12.70 |
| 2 | 14 | Charlotte HINDE | 16 | RichmondDale | 10:11.40 |
| 3 | 16 | Mia TRAVIS-JONES | 14 | Co Leeds | 10:10.25 |
| 4 | 18 | Vivien WILKINSON | 13 | Wirral Metro | 10:05.50 |
| 5 | 17 | Maizie RICHARDSON | 18 | Conwy | 10:08.79 |
| 6 | 15 | Maisie MATTHEWS | 13 | Louth | 10:10.40 |
| 7 | 13 | Melina-Grace COMERFORD | 14 | Wigan BEST | 10:12.50 |
| 8 | 11 | Liberty FLOUNDERS | 14 | RichmondDale | 10:17.40 |
| 9 | 9 | Poppy JOHNSON | 12 | Wigan BEST | 10:21.88 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 20 | Lily CATTLIN | 14 | Rotherham Mo | 9:59.90 |
| 1 | 22 | Alba KNELLER | 13 | RichmondDale | 9:54.91 |
| 2 | 24 | Pollyanna KERSHAW | 14 | Blackpool Aq | 9:54.60 |
| 3 | 26 | Maisie LLOYD | 14 | Wigan BEST | 9:52.00 |
| 4 | 28 | Isabel HANDLEY | 15 | Co Leeds | 9:46.06 |
| 5 | 27 | Elizabeth LYONS | 16 | Co Liverpool | 9:49.68 |
| 6 | 25 | Tilly STEVENS | 14 | Co Liverpool | 9:53.66 |
| 7 | 23 | Isabelle HALL | 13 | Co Leeds | 9:54.67 |
| 8 | 21 | Ennea CHISNALL | 15 | Wigan BEST | 9:56.51 |
| 9 | 19 | Isla YATES | 17 | York City | 10:02.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 30 | Ellie PEACOCK | 17 | RichmondDale | 9:40.37 |
| 1 | 32 | Francesca HALLAM-STOTT | 17 | Grantham | 9:40.30 |
| 2 | 34 | Jorja HOWARD | 14 | Wigan BEST | 9:33.70 |
| 3 | 36 | Rhianna FOSTER | 18 | KingstonHull | 9:28.12 |
| 4 | 38 | Sedona REED | 17 | Co Leeds | 9:13.37 |
| 5 | 37 | Lauren LILLEY | 16 | Co Leeds | 9:23.01 |
| 6 | 35 | Hannah BRUCE | 15 | South Lincs | 9:30.50 |
| 7 | 33 | Molly NORTON | 14 | Co Leeds | 9:34.49 |
| 8 | 31 | Darcey CROSSLEY | 16 | Co Leeds | 9:40.31 |
| 9 | 29 | Millie DARRAND | 15 | York City | 9:41.19 |