| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Darcie CADER | 13 | Berkhamsted | 3:14.76 |
| 2 | 4 | Gwen KNIPE | 14 | Dunstable | 3:02.02 |
| 3 | 6 | Lillian OWENS | 11 | Putteridge | 2:59.47 |
| 4 | 8 | Alice BUCKINGHAM | 12 | Team Luton | 2:50.80 |
| 5 | 7 | Connie FLITTON | 14 | Dunstable | 2:58.00 |
| 6 | 5 | Sophie WILLIAMS | 16 | Co Cambridge | 2:59.89 |
| 7 | 3 | Chloe MATTHEWS | 13 | Linslade | 3:06.29 |
| 8 | 1 | Alice CRIDLAND | 15 | St Ives | 3:51.62 |