| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Chloe Richardson | 11 | Northampton | 1:38.21 |
| 2 | 2 | Sophie Walgate | 11 | Northampton | 1:35.41 |
| 3 | 3 | Grace Balneaves | 11 | Northampton | 1:30.57 |
| 4 | 4 | Sophie Rees | 11 | Northampton | 1:21.19 |
| 5 | 5 | Annabelle Lucas | 11 | Northampton | 1:29.80 |
| 6 | 6 | Savannah Koriya | 11 | Northampton | 1:31.99 |
| 7 | 7 | Daisy-Raie Weekes | 11 | Northampton | 1:38.04 |
| 8 | 8 | Rose Cooper | 10 | Wellingboro | 1:41.96 |