| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Caroline LEWITT | 14 | Chelsea&West | : . |
| 1 | 2 | Brenna HOWELL | 13 | Co Peterboro | : . |
| 2 | 3 | Ruby FRASER | 14 | Hillingdon | : . |
| 3 | 4 | Anel UTEPOVA | 14 | Ealing | : . |
| 4 | 5 | Maria EVANS | 14 | Thanet Swim | : . |
| 5 | 6 | Ellie VOWELL | 14 | Sevenoaks | : . |
| 6 | 7 | Libby MAGILL | 14 | Hatfield | : . |
| 7 | 8 | Charlotte RENS | 14 | Co Liverpool | : . |
| 8 | 9 | Chloe PRITCHARD | 13 | Swansea Aq | : . |
| 9 | 10 | Gerda VASILIAUSKAITE | 16 | Boldmere | : . |