| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Grace Johnson | 12 | Satellite | 40.38 |
| 2 | 2 | Cheuk Kiu Kianna Hui | 12 | Co Liverpool | 39.91 |
| 3 | 3 | Esme Wilson | 12 | Cockermouth | 39.21 |
| 4 | 4 | Hattie Lawson | 12 | Winsford | 38.93 |
| 5 | 5 | Eliza Johnson | 12 | Blackburn | 39.13 |
| 6 | 6 | Athena Johnstone | 12 | Leyland Barr | 39.79 |
| 7 | 7 | Talula Kay | 12 | Preston | 40.05 |
| 8 | 8 | Mia Dalton | 12 | Co Salford | 40.75 |