| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 2 | Maddison Walker | 9 | Thornaby | |
| 3 | 4 | Ellen McDonagh | 10 | Thornaby | 36.95 |
| 4 | 3 | Isabella Jack | 9 | Northall'ton | 39.57 |
| 5 | 1 | Paige Glennon | 8 | Thornaby | |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 6 | Elisha Rhodes | 8 | Saltburn Mar | 27.87 |
| 2 | 8 | Elizabeth Smart | 10 | Eston | 23.21 |
| 3 | 10 | Elyse Reacroft | 10 | Guisborough | 22.29 |
| 4 | 9 | Daisy Grainge | 10 | Northall'ton | 22.57 |
| 5 | 7 | Louise Pettit | 10 | Guisborough | 27.06 |
| 6 | 5 | Hannah Rose Graham | 9 | Thornaby | 31.02 |