| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Ellie-Jayne Gamon | 9 | Northall'ton | |
| 2 | 3 | Alexandra Hanson | 11 | Northall'ton | 1:36.60 |
| 3 | 2 | Eleanor Halliday | 12 | Northall'ton | 1:37.76 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Abbie Hodgkinson | 16 | Northall'ton | 1:14.46 |
| 3 | 4 | Beatrice Rayfield | 15 | Northall'ton | 1:24.57 |