| Final | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Lottie Barrett | 11 | Newport | 50.44 |
| 2 | 2 | Rose Bayle | 11 | Wrekin SC | 49.88 |
| 3 | 3 | Demi Vincent | 11 | Newport | 49.43 |
| 4 | 4 | Beatrice Rumford-Warr | 11 | Wrekin SC | 48.66 |
| 5 | 5 | Charlotte Furniss | 10 | Newport | 49.01 |
| 6 | 6 | Scarlett Plimmer | 10 | Wellington M | 49.79 |
| 7 | 7 | Olivia Homer | 11 | Northgate | 49.90 |
| 8 | 8 | Melanie Greenhalgh | 11 | TelfordAqua | 50.96 |