EVENT 402 Girl Open 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 2 | 10 | Scarlett HUMPHREY | 17 | S11 | Northampton | 6:04.42 |
| 3 | 12 | Fallon COONEY | 20 | S10 | Co Manch Aq | 5:43.53 |
| 4 | 2 | Isobel HITCHMOUGH | 13 | | Warrington W | 5:01.40 |
| 5 | 1 | Isabel HANDLEY | 13 | | Co Leeds | 5:03.47 |
| 6 | 11 | Eliza HUMPHREY | 17 | S11 | Northampton | 6:02.03 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 4 | Charlotte SHAW | 14 | | Co Leeds | 4:56.05 |
| 1 | 6 | Olivia WATTS | 13 | | Warrington W | 4:54.60 |
| 2 | 8 | Greta HIGHFIELD | 14 | | Donc Dartes | 4:51.81 |
| 3 | 14 | Darcey MURPHY | 15 | | Stockport Mo | 4:50.20 |
| 4 | 16 | Lauren LILLEY | 14 | | Co Leeds | 4:48.09 |
| 5 | 15 | Abigail HEALD | 17 | | Co Leeds | 4:50.12 |
| 6 | 13 | Kt TAYLOR | 16 | | Chesterfield | 4:50.30 |
| 7 | 7 | Gabrielle IDLE-BEAVERS | 14 | | Mt Kelly | 4:53.00 |
| 8 | 5 | Amelia GERRARD | 13 | | Warrington W | 4:55.50 |
| 9 | 3 | Abbie ROSCOE | 13 | | Wirral Metro | 4:58.10 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 20 | Lucie BANNATYNE | 15 | | Leic Sharks | 4:46.70 |
| 1 | 24 | Emilia CIESZCZYK | 15 | | Northampton | 4:44.42 |
| 2 | 28 | Jessica SMELT | 15 | | Bo Kirklees | 4:42.99 |
| 3 | 32 | Daisy RUMMERY | 18 | | South Lincs | 4:40.00 |
| 4 | 37 | Ruby KNIGHT | 16 | | Bo Kirklees | 4:35.20 |
| 5 | 34 | Mia BURSLEM | 16 | | Co Liverpool | 4:38.48 |
| 6 | 30 | Emily OLIVER | 16 | | Bo Kirklees | 4:41.95 |
| 7 | 26 | Evangeline STACEY | 15 | | Co Leeds | 4:43.05 |
| 8 | 22 | Sally RUTLEDGE | 18 | | Bo Kirklees | 4:45.10 |
| 9 | 17 | Sophie MARTIN | 15 | | Chesterfield | 4:47.60 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 21 | Sedona REED | 15 | | Co Leeds | 4:45.29 |
| 1 | 25 | Kerry HENNIE | 14 | | Warrington W | 4:43.20 |
| 2 | 29 | Megan PENDLETON | 16 | | Wirral Metro | 4:42.10 |
| 3 | 33 | Lucy PARSONS | 15 | | Co Liverpool | 4:38.89 |
| 4 | 39 | Sophie TRAILL | 15 | | Stockport Mo | 4:31.50 |
| 5 | 35 | Mollie BRIGGS | 17 | | South Lincs | 4:37.50 |
| 6 | 31 | Katie RAWNSLEY | 17 | | Prescot | 4:40.80 |
| 7 | 27 | Lillie BRYANT | 18 | | Bo Kirklees | 4:43.00 |
| 8 | 23 | Jessica REILLY | 16 | | Harrogate | 4:44.60 |
| 9 | 19 | Fiona BYRNE | 18 | | Co Liverpool | 4:46.74 |