EVENT 201 Girl 12 Yrs/Over 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Grace-Lily LAZENBY | 13 | Donc Dartes | 11:03.30 |
| 2 | 4 | Mei YUASA | 12 | Co Leeds | 10:44.28 |
| 3 | 6 | Liliah VINCENT | 13 | Co Leeds | 10:21.67 |
| 4 | 8 | Elizabeth DIXON | 13 | Co Leeds | 10:17.75 |
| 5 | 7 | Rose KEEFE | 14 | Donc Dartes | 10:18.20 |
| 6 | 5 | Emily FRENCH | 14 | Wirral Metro | 10:25.00 |
| 7 | 3 | Aimee KEEFE | 13 | Donc Dartes | 10:59.60 |
| 8 | 1 | Mia TRAVIS-JONES | 12 | Co Leeds | 11:31.32 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 10 | Olivia WATTS | 13 | Warrington W | 10:01.50 |
| 1 | 12 | Lauren LILLEY | 14 | Co Leeds | 9:55.42 |
| 2 | 14 | Eliza RADCLYFFE | 16 | Prescot | 9:50.03 |
| 3 | 16 | Sedona REED | 15 | Co Leeds | 9:48.40 |
| 4 | 18 | Millie THRELFALL | 13 | Co Leeds | 9:47.50 |
| 5 | 17 | Lucie BANNATYNE | 15 | Leic Sharks | 9:47.90 |
| 6 | 15 | Charlotte MORETON | 14 | Co Leeds | 9:48.50 |
| 7 | 13 | Evangeline STACEY | 15 | Co Leeds | 9:52.63 |
| 8 | 11 | Grace BURTON | 14 | Donc Dartes | 9:59.09 |
| 9 | 9 | Macy BARKER | 15 | Warrington W | 10:11.90 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 20 | Natasha GAYTER | 17 | Warrington W | 9:40.60 |
| 1 | 22 | Lauren JONES | 17 | Warrington W | 9:37.50 |
| 2 | 24 | Alexandra WOODHEAD | 18 | Bo Kirklees | 9:37.09 |
| 3 | 26 | Lucy ALLMAN | 16 | Co Leeds | 9:29.16 |
| 4 | 28 | Sophie TRAILL | 15 | Stockport Mo | 9:11.50 |
| 5 | 27 | Jess WIDDOWSON | 16 | Co Leeds | 9:25.20 |
| 6 | 25 | Mollie BRIGGS | 17 | South Lincs | 9:32.40 |
| 7 | 23 | Fiona BYRNE | 18 | Co Liverpool | 9:37.32 |
| 8 | 21 | Megan PENDLETON | 16 | Wirral Metro | 9:39.70 |
| 9 | 19 | Martha RICKETTS | 15 | Satellite | 9:45.25 |