EVENT 306 Open/Male 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 2 | Lewis LUNG | 10 | Co Leeds | 4:15.00 |
| 4 | 4 | Yin Ho Adrian CHAN | 10 | Co Leeds | 3:51.63 |
| 5 | 3 | Finley SMITH | 9 | Co Leeds | 4:08.00 |
| 6 | 1 | Francis SALTHOUSE | 10 | Co Sheffield | 4:20.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Eddie SMITH | 10 | Co Sheffield | 3:30.00 |
| 2 | 8 | Tomas BICKERS | 12 | Co Leeds | 3:14.13 |
| 3 | 10 | Mason CAMERON | 13 | Co Sheffield | 3:08.89 |
| 4 | 12 | Max SMITH | 12 | Co Sheffield | 3:08.23 |
| 5 | 11 | Harry DIXON | 10 | Co Leeds | 3:08.68 |
| 6 | 9 | Dexter GROCOCK | 12 | Co Sheffield | 3:10.00 |
| 7 | 7 | Henry PATTERSON | 10 | Co Leeds | 3:28.86 |
| 8 | 5 | Ellis HARGREAVES | 12 | Co Leeds | 3:30.00 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Olaf GRUDOWSKI | 12 | Co Leeds | 3:02.93 |
| 2 | 16 | Jacob JONES | 12 | Co Leeds | 3:00.00 |
| 3 | 18 | Alfie CRAGGS | 13 | Co Leeds | 2:49.80 |
| 4 | 20 | Ewan LEONARD | 15 | Conwy | 2:27.21 |
| 5 | 19 | Callum FOZARD | 13 | Co Leeds | 2:46.09 |
| 6 | 17 | Oliver BARKER | 11 | Co Leeds | 2:56.97 |
| 7 | 15 | Abdullah MOKHLISSE | 14 | Chapeltown | 3:01.20 |
| 8 | 13 | Harrison WAKE | 12 | Co Leeds | 3:06.85 |