| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Poppy AYRE | 12 | Middlesboro | 1:41.31 |
| 4 | 3 | Ananya PRASAD | 12 | Middlesboro | 1:28.13 |
| 5 | 2 | Sarah TAYLOR | 47 | Middlesboro | 1:33.00 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Olivia GREEN | 15 | Middlesboro | 1:14.40 |
| 3 | 7 | Pearl LIGHTWOOD | 17 | Middlesboro | 1:11.38 |
| 4 | 9 | Lydia SHIPLEY | 12 | Middlesboro | 1:05.20 |
| 5 | 8 | Sydney DEARLOVE | 15 | Middlesboro | 1:08.82 |
| 6 | 6 | Ella PROUD | 16 | Middlesboro | 1:12.63 |
| 7 | 4 | Aditi PRASAD | 15 | Middlesboro | 1:18.04 |