| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Josephine ARMSTRONG | 16 | Worcester | : . |
| 1 | 2 | Imogen MEERS | 16 | Bromley | : . |
| 2 | 3 | Lauren BRANTLEY | 16 | Camden Swiss | : . |
| 3 | 4 | Zo� NAYLOR-PERROTT | 15 | Sevenoaks | : . |
| 4 | 5 | Ciara MORRIS | 16 | Co Cardiff | : . |
| 5 | 6 | Tamzin MYBURGH | 15 | Thanet Swim | : . |
| 6 | 7 | Anel UTEPOVA | 15 | Ealing | : . |
| 7 | 8 | Betsy WIZARD | 15 | Northampton | : . |
| 8 | 9 | Hannah PETER | 15 | Swansea Aq | : . |
| 9 | 10 | Holly WHITE | 16 | Co Liverpool | : . |