| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Annabel Vance | 12 | Northampton | : . |
| 1 | 2 | Chizara Elechi | 12 | Millfield | : . |
| 2 | 3 | Nalinratn (pearl) Soph | 12 | Co Oxford | : . |
| 3 | 4 | Holly Tremayne | 12 | Plymouth Lea | : . |
| 4 | 5 | Jessica Harmer | 12 | Guildford Ct | : . |
| 5 | 6 | Maisie Dickinson | 12 | Wycombe Dist | : . |
| 6 | 7 | Honor Fox | 12 | Co Cardiff | : . |
| 7 | 8 | Megan Gray | 12 | Hatfield | : . |
| 8 | 9 | Sophie Traill | 12 | Stockport Mo | : . |
| 9 | 10 | Charlotte Roome | 12 | Co Derby | : . |