| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Poppy Traynier | 12 | Beckenham | : . |
| 2 | 2 | Lara Challinor | 12 | Stockport Mo | : . |
| 3 | 3 | Lily Green | 12 | Plymouth Lea | : . |
| 4 | 4 | Alexandra Nurney | 12 | Camden Swiss | : . |
| 5 | 5 | Ella Humphries | 12 | Guildford Ct | : . |
| 6 | 6 | Olivia Bunimovich | 12 | Chelsea&West | : . |
| 7 | 7 | Sophia Todd | 12 | Maidenhead | : . |
| 8 | 8 | Rose Lewin | 12 | Wycombe Dist | : . |