| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Lucy CLAYTON | 19 | Worcester | : . |
| 1 | 2 | Ellen SCHOLES | 21 | Bromley | : . |
| 2 | 3 | Ally LARSON | 18 | Camden Swiss | : . |
| 3 | 4 | Madeleine GLEN | 15 | Sevenoaks | : . |
| 4 | 5 | Katie REES | 10 | Co Cardiff | : . |
| 5 | 6 | Lilly JEWELL | 16 | Thanet Swim | : . |
| 6 | 7 | Brodie JUDGE | 17 | Ealing | : . |
| 7 | 8 | Katie DURNO | 16 | Northampton | : . |
| 8 | 9 | Ellena JONES | 21 | Swansea Aq | : . |
| 9 | 10 | Emily SPENCER | 18 | Co Liverpool | : . |