| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Isabelle PAWLOWSKI | 12 | Corby | 3:31.90 |
| 2 | 4 | Isabelle TANNER | 15 | Corby | 3:16.85 |
| 3 | 6 | Eleanor TRAHEARN | 15 | Hinckley | 2:55.30 |
| 4 | 8 | Sofia REEDHA | 13 | Co Leicester | 2:45.60 |
| 5 | 7 | Abigail GOLYNKER | 14 | Co Leicester | 2:50.20 |
| 6 | 5 | Phillippa CUTMORE | 12 | Corby | 3:10.75 |
| 7 | 3 | Elsbeth WILLIAMS | 12 | Market Har | 3:17.90 |
| 8 | 1 | Millie DAY | 16 | Wellingboro | 3:33.90 |