| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Madeleine Burton | 16 | RTW Monson | 4:35.84 |
| 1 | 2 | Megan Vingoe | 16 | Carn Brea | 4:35.70 |
| 2 | 3 | Charlotte Kennedy | 16 | Stockport Mo | 4:32.70 |
| 3 | 4 | Rebecca Flisher | 16 | Nova Cent'n | 4:32.29 |
| 4 | 5 | Olivia Miles | 16 | Thanet Swim | 4:30.63 |
| 5 | 6 | Jessica McDonough | 16 | Co Liverpool | 4:30.85 |
| 6 | 7 | Annie Pearson | 16 | Nova Cent'n | 4:32.36 |
| 7 | 8 | Ella Thatcher-Plant | 16 | Wrekin Coll | 4:33.74 |
| 8 | 9 | Ella Fisher | 16 | York City | 4:35.74 |
| 9 | 10 | Polly Painter | 16 | Millfield | 4:36.75 |