| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Lilly Kowal | 12 | Wellingboro | 1:17.84 |
| 2 | 2 | Kimberley Hayes | 12 | Kettering | 1:16.34 |
| 3 | 3 | Lexie Webb | 12 | Rushden | 1:13.91 |
| 4 | 4 | Teagan Payne | 12 | Northampton | 1:11.22 |
| 5 | 5 | Isobelle Frow | 12 | Corby | 1:13.75 |
| 6 | 6 | Sofia Reedha | 12 | Corby | 1:14.58 |
| 7 | 7 | Imogen Langley | 12 | Rushden | 1:16.60 |
| 8 | 8 | Edith Kaberry | 12 | Corby | 1:18.19 |