| Final | ||||||
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 1 | Ruby Cummins | 18 | Wellingboro | 1:34.04 | |
| 2 | 2 | Charlotte Mair | 20 | Kettering | 1:30.05 | |
| 3 | 3 | Sophia Wiffen | 18 | Corby | 1:26.82 | |
| 4 | 4 | Summer York | 17 | Corby | 1:20.68 | |
| 5 | 5 | Magenta Kenyon | 18 | Kettering | 1:26.49 | |
| 6 | 6 | Orla Eyton-Jones | 17 | Corby | 1:27.40 | |
| 7 | 7 | Maisie Summers-Newton | 21 | SB6 | Northampton | 1:32.58 |