| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 2 | Maya Westlake | 20 | Co Sheffield | 4:22.74 |
| 3 | 3 | Georgia Darwent | 19 | Newcastle | 4:18.67 |
| 4 | 4 | Isobel Grant | 19 | Co Sheffield | 4:18.32 |
| 5 | 5 | Isobel Griffiths | 18 | Co Birm'ham | 4:18.64 |
| 6 | 6 | Mollie Wright | 19 | Nova Cent'n | 4:20.57 |
| 7 | 7 | Lucy Ellis | 20 | Co Sund'land | 4:30.49 |