EVENT 102 Womens 15 Yrs/Over 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 1 | Sophie Taylor | 17 | S7 | South Lincs | 6:40.70 |
| 2 | 2 | Sofie Schneider | 15 | | Louth | 4:39.47 |
| 3 | 3 | Amy Neild | 15 | | Derventio | 4:38.59 |
| 4 | 4 | Olivia Mathias | 15 | | Nova Cent'n | 4:37.90 |
| 5 | 5 | Ailsa Gavan McHarg | 15 | | Team Mercia | 4:36.64 |
| 6 | 6 | Amy Grant | 15 | | StaffordApex | 4:35.90 |
| 7 | 7 | Kelda McKnight | 17 | | Deepings | 4:35.81 |
| 8 | 8 | Emily Patch | 16 | | Louth | 4:35.46 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 9 | Caitlin Hannah | 15 | | Northampton | 4:34.50 |
| 2 | 10 | Lucy Fairbanks | 15 | | Shrewsbury | 4:33.96 |
| 3 | 11 | Megan Willetts | 16 | | Royal Wolv | 4:32.90 |
| 4 | 12 | Holly Shepherd | 15 | | Royal Wolv | 4:32.90 |
| 5 | 13 | Rebecca Orton | 16 | | Co Leicester | 4:32.80 |
| 6 | 14 | Frances Butler | 16 | | Co Derby | 4:32.64 |
| 7 | 15 | Bryony Woolley | 17 | | Chase | 4:32.37 |
| 8 | 16 | Lorna Milligan | 16 | | Nova Cent'n | 4:32.24 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 17 | Sarah Bates | 15 | | Co Leicester | 4:32.22 |
| 2 | 18 | Grace Alexander | 17 | | Co Hereford | 4:31.18 |
| 3 | 19 | Lilyella Craw-Seaman | 15 | | Royal Wolv | 4:31.13 |
| 4 | 20 | Rebecca Harris | 16 | | Royal Wolv | 4:30.60 |
| 5 | 21 | Shannon Brown | 16 | | Nova Cent'n | 4:29.30 |
| 6 | 22 | Georgina Young | 17 | | Nova Cent'n | 4:29.19 |
| 7 | 23 | Lucy Castle | 17 | | Team Mercia | 4:29.00 |
| 8 | 24 | Calypso Harvey | 16 | | Ledbury | 4:28.91 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 25 | Tara Haworth | 15 | | Lincoln Vulc | 4:28.05 |
| 2 | 26 | Lara Robinson | 17 | | Nova Cent'n | 4:27.90 |
| 3 | 27 | Gabriella Crawford | 16 | | Nova Cent'n | 4:27.80 |
| 4 | 28 | Sarah Cross | 16 | | Co Derby | 4:27.79 |
| 5 | 29 | Kirsty Wagstaff | 16 | | Northampton | 4:27.50 |
| 6 | 30 | Lauren Wray | 19 | | Deepings | 4:27.50 |
| 7 | 31 | Abigail Humphreys | 15 | | Co Coventry | 4:27.27 |
| 8 | 32 | Harriet Rothwell | 15 | | Ellesmere Co | 4:26.76 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Cat | Club/Country | Time |
| 1 | 33 | Abigail Burr | 15 | | Lincoln Vulc | 4:25.90 |
| 2 | 34 | Courteney Price | 15 | | Royal Wolv | 4:24.40 |
| 3 | 35 | Rose Foden | 15 | | Northampton | 4:23.70 |
| 4 | 36 | Megan Carline | 15 | | Royal Wolv | 4:23.70 |
| 5 | 37 | Olivia Gardner | 15 | | Ellesmere Co | 4:22.15 |
| 6 | 38 | Mollie Wright | 15 | | Nova Cent'n | 4:22.05 |
| 7 | 39 | Chloe Finch | 15 | | Co Birm'ham | 4:15.80 |
| 8 | 40 | Alice Dearing | 17 | | Royal Wolv | 4:12.71 |