| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Gina HEYN | 33 | Chelsea&West | : . |
| 1 | 2 | Mollie ALLEN | 19 | Co Peterboro | : . |
| 2 | 3 | Loulou VOS | 18 | Hillingdon | : . |
| 3 | 4 | Anna HOPKIN | 21 | Ealing | : . |
| 4 | 5 | Maisie MACARTNEY | 16 | Thanet Swim | : . |
| 5 | 6 | Lily SNELL | 17 | Sevenoaks | : . |
| 6 | 7 | Laura COPPING | 17 | Hatfield | : . |
| 7 | 8 | Emily SPENCER | 17 | Co Liverpool | : . |
| 8 | 9 | Elena JONES | 20 | Swansea Aq | : . |
| 9 | 10 | Lydia BARNSLEY | 18 | Boldmere | : . |