| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Elizabeth Kingham | 17 | Co Birm'ham | 4:56.30 |
| 2 | 2 | Amelia Monaghan | 17 | Co Peterboro | 4:55.84 |
| 3 | 3 | Rebecca Clynes | 17 | Co Leeds | 4:54.64 |
| 4 | 4 | Freya Colbert | 15 | Nova Cent'n | 4:53.27 |
| 5 | 5 | Lily Booker | 18 | Millfield | 4:54.31 |
| 6 | 6 | Daisy Anderson | 18 | Thanet Swim | 4:54.73 |
| 7 | 7 | Mollie Wright | 21 | Nova Cent'n | 4:56.02 |
| 8 | 8 | Caitlin Mackay | 18 | Wycombe Dist | 4:57.89 |