EVENT 102 Womens 15 Yrs/Over 400m Freestyle - Heats
Not Competing : 9
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Daisy Jones | 15 | Biddulph | 4:46.81 |
| 2 | 2 | Georgina Mitchell | 15 | Strat Sharks | 4:46.48 |
| 3 | 3 | Koumi Ikeda | 15 | Strat Sharks | 4:46.35 |
| 4 | 4 | Josie Ross | 16 | Redditch | 4:44.82 |
| 5 | 5 | Beatrice Adams | 15 | Boldmere | 4:44.10 |
| 6 | 6 | Charlotte Cox | 16 | Strat Sharks | 4:43.34 |
| 7 | 7 | Tess Sanders | 15 | Wrekin Coll | 4:42.30 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 8 | Holly Lewis | 15 | Bilston | 4:42.27 |
| 2 | 10 | Tilly Thompson | 15 | Royal Wolv | 4:40.90 |
| 3 | 11 | Ana Vicary | 15 | Co Coventry | 4:40.40 |
| 4 | 12 | Olivia Barber | 15 | Biddulph | 4:38.96 |
| 5 | 13 | Abbie Grantham | 16 | Co Coventry | 4:38.80 |
| 6 | 14 | Shannon Robinson | 15 | Wolv'hampton | 4:38.42 |
| 7 | 15 | Seren Mahon | 17 | Strat Sharks | 4:36.76 |
| 8 | 16 | Sadie Turner | 18 | Wolv'hampton | 4:35.65 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 18 | Zara Leleux | 15 | Wrekin Coll | 4:33.10 |
| 2 | 20 | Holly Townson | 16 | Wrekin Coll | 4:29.90 |
| 3 | 22 | Holly Shepherd | 18 | Royal Wolv | 4:27.47 |
| 4 | 24 | Eva Vicary | 16 | Co Coventry | 4:20.20 |
| 5 | 23 | Melanie Hall | 17 | Royal Wolv | 4:22.80 |
| 6 | 21 | Polly Holden | 17 | Newcastle St | 4:27.80 |
| 7 | 19 | Isabelle Callaghan | 15 | Strat Sharks | 4:32.75 |
| 8 | 17 | Felicity Dempster | 17 | Team Mercia | 4:34.30 |