| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Erin Starr | 11 | Long Eaton | 49.70 |
| 2 | 2 | Martha Hasham | 11 | Ripley | 48.24 |
| 3 | 3 | Charlotte Hill | 11 | BelperMarlin | 46.92 |
| 4 | 4 | Katherine Liu | 11 | DerbyPhoenix | 44.52 |
| 5 | 5 | Matilda Shawcross | 11 | Bakewell SC | 46.51 |
| 6 | 6 | Bethany Fenn | 11 | BelperMarlin | 48.13 |
| 7 | 7 | Ellie Wan | 10 | Repton | 49.11 |
| 8 | 8 | Hannah John | 11 | Repton | 49.95 |