| Fastest Heat - 5 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 31 | Fleur Lewis | 16 | Barnet Copt | : . |
| 2 | 33 | Alisha Hawkins | 18 | Stockport Mo | : . |
| 3 | 35 | Maisie Macartney | 18 | Thanet Swim | : . |
| 4 | 37 | Michaella Glenister | 17 | Leic Sharks | : . |
| 5 | 36 | Leah Crisp | 18 | Co Leeds | : . |
| 6 | 34 | Emily Clarke | 22 | Loughboro Un | : . |
| 7 | 32 | Nicole Ryan | 21 | Co Oxford | : . |
| 8 | 30 | Lauren Wetherell | 17 | Ellesmere Co | : . |