| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Maisie Elliott | 16 | Co Leicester | 4:25.96 |
| 2 | 2 | Sapphira Gabbani | 16 | Co Sheffield | 4:25.28 |
| 3 | 3 | Ella Dyson | 15 | Wycombe Dist | 4:24.97 |
| 4 | 4 | Mackenzie Whyatt | 17 | Co Peterboro | 4:23.67 |
| 5 | 5 | Milly Boulding | 15 | Bo Kirklees | 4:24.93 |
| 6 | 6 | Alicia Dingle | 17 | Royal Wolv | 4:25.17 |
| 7 | 7 | Mia Slevin | 16 | Derventio | 4:25.77 |
| 8 | 8 | Iona Macleod | 16 | Dun City Aqu | 4:26.49 |