EVENT 204 Female 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Darcy Mackinnon | 11 | Northall'ton | |
| 2 | 3 | Eleanor Halliday | 12 | Northall'ton | 2:03.86 |
| 3 | 2 | Summer Nicholson | 10 | Northall'ton | 2:14.09 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Scarlett Whitwell | 12 | Thirsk WH | 1:57.10 |
| 3 | 4 | Eva Bailey | 11 | Northall'ton | 2:02.97 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 7 | Betsy Horner | 11 | Thirsk WH | 1:47.40 |
| 2 | 9 | Jorgina Poynton | 16 | Northall'ton | 1:31.17 |
| 3 | 8 | Lucy Watters | 18 | Northall'ton | 1:38.80 |
| 4 | 6 | Millie Fletcher | 14 | Thirsk WH | 1:55.72 |