| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | A Harrison-Stokes | 12 | Co Wakefield | 3:38.00 |
| 2 | 4 | Rosie Cook | 11 | Middlesboro | 3:16.70 |
| 3 | 6 | Kayleigh Hatfield | 15 | Billingham | 3:01.51 |
| 4 | 8 | Ella Proud | 15 | Middlesboro | 2:39.40 |
| 5 | 7 | Charlotte Bashford | 14 | Middlesboro | 2:41.90 |
| 6 | 5 | Sinali Dissanayake | 15 | Billingham | 3:12.17 |
| 7 | 3 | Elyza Hylands | 13 | Harrogate | 3:20.00 |
| 8 | 1 | Isabelle Brydon | 11 | Eston | 4:00.01 |