| Final | ||||||
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 1 | 1 | Grace Grindrod | 18 | Northampton | 1:15.88 | |
| 2 | 2 | Amber Haycock | 19 | S10 | Northampton | 1:14.66 |
| 3 | 3 | Isabelle Joyner | 17 | Daventry | 1:12.81 | |
| 4 | 4 | Grace Wingham | 19 | Corby | 1:07.44 | |
| 5 | 5 | Phebe Adams | 17 | Northampton | 1:10.20 | |
| 6 | 6 | Ella Mae Prior | 18 | Corby | 1:14.17 | |
| 7 | 7 | Ella Newton | 17 | Corby | 1:15.61 | |
| 8 | 8 | Holly Hayle | 17 | Northampton | 1:16.60 | |