| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Amelie FOX-HASKINS | 12 | Worcester | : . |
| 1 | 2 | Beatrice PICKERING | 11 | Bromley | : . |
| 2 | 3 | Charlotte PAMA | 12 | Camden Swiss | : . |
| 3 | 4 | Millie ARMSTRONG | 12 | Sevenoaks | : . |
| 4 | 5 | Connie MILLAR | 11 | Co Cardiff | : . |
| 5 | 6 | Evie SLATER | 12 | Thanet Swim | : . |
| 6 | 7 | Roxanne LAWSON | 12 | Ealing | : . |
| 7 | 8 | Emily HORNE | 12 | Northampton | : . |
| 8 | 9 | Kara PRITCHARD | 12 | Swansea Aq | : . |
| 9 | 10 | Sianna RENS | 12 | Co Liverpool | : . |