| Fastest Heat - 9 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 74 | Mollie Wright | 21 | Nova Cent'n | : . |
| 1 | 76 | Maisie Macartney | 18 | Thanet Swim | : . |
| 2 | 78 | Lauren Wetherell | 17 | Ellesmere Co | : . |
| 3 | 80 | Emily Clarke | 22 | Loughboro Un | : . |
| 4 | 82 | Leah Crisp | 18 | Co Leeds | : . |
| 5 | 81 | Danielle Huskisson | 26 | UniOfStirl | : . |
| 6 | 79 | Niamh Hofland | 17 | Royal Wolv | : . |
| 7 | 77 | Fleur Lewis | 16 | Barnet Copt | : . |
| 8 | 75 | Amelia Rodd | 17 | Ellesmere Co | : . |
| 9 | 73 | Lola Davison | 16 | Newcastle | : . |