| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Isobel Bryant | 15 | Guildford Ct | 4:31.95 |
| 1 | 2 | Fleur Lewis | 15 | Barnet Copt | 4:28.92 |
| 2 | 3 | Mia Slevin | 15 | Derventio | 4:28.12 |
| 3 | 4 | Maisie Elliott | 15 | Co Leicester | 4:27.14 |
| 4 | 5 | Lola Davison | 15 | Newcastle | 4:21.97 |
| 5 | 6 | Beatrice Varley | 15 | Teddington | 4:26.96 |
| 6 | 7 | Betsy Wizard | 15 | Northampton | 4:27.78 |
| 7 | 8 | Iona Macleod | 15 | Dun City Aqu | 4:28.37 |
| 8 | 9 | Jessica Morgan | 15 | Southport | 4:31.57 |
| 9 | 10 | Kirstie Flynn | 15 | Leatherhead | 4:32.02 |