EVENT 204 Mixed 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Ethan PEARCE | 14 | Northall'ton | |
| 2 | 2 | Ellis JEFFERSON | 9 | Loftus Dol | 2:23.99 |
| 3 | 3 | Elizabeth HOGG | 9 | Loftus Dol | 2:20.97 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Izzy CHOULES | 11 | Northall'ton | 2:16.50 |
| 2 | 5 | Toby BAILEY | 10 | Northall'ton | 2:09.21 |
| 3 | 6 | Briana MAZHAMBE | 10 | Eston | 2:03.24 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 7 | Finlay HALLIDAY | 9 | Northall'ton | 1:57.73 |
| 2 | 8 | Summer NICHOLSON | 11 | Northall'ton | 1:55.40 |
| 3 | 9 | Eva BAILEY | 12 | Northall'ton | 1:50.20 |
| 4 | 10 | Tani ODUBIYI | 13 | Stokesley | 1:49.24 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 12 | Harry LOCK | 11 | Eston | 1:42.38 |
| 2 | 14 | Jacob WHARTON | 18 | Northall'ton | 1:17.03 |
| 3 | 13 | Jaicob SAUNDERS | 16 | Northall'ton | 1:26.54 |
| 4 | 11 | Hattie WINDELL | 14 | Eston | 1:43.57 |