| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Elizabeth BOECKMAN | 17 | Chelsea&West | : . |
| 1 | 2 | Mollie ALLEN | 19 | Co Peterboro | : . |
| 2 | 3 | Melanie HALL | 18 | Hillingdon | : . |
| 3 | 4 | Ekaterina AVRAMOVA | 26 | Ealing | : . |
| 4 | 5 | Daisy ANDERSON | 16 | Thanet Swim | : . |
| 5 | 6 | Annabel KEPPEL-PALMER | 20 | Sevenoaks | : . |
| 6 | 7 | Lily WEST | 20 | Hatfield | : . |
| 7 | 8 | Mattea jay OLIVER | 17 | Co Liverpool | : . |
| 8 | 9 | Sophie EVANS | 18 | Swansea Aq | : . |
| 9 | 10 | Jenny FOWLER | 23 | Boldmere | : . |