EVENT 404 Boy Open 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Harry DIXON | 9 | Co Leeds | 3:58.70 |
| 2 | 4 | Harrison WAKE | 10 | Co Leeds | 3:45.00 |
| 3 | 6 | Owen TEMPEST | 11 | Co Leeds | 3:22.50 |
| 4 | 8 | Reuben HARRISON | 12 | Co Leeds | 3:16.85 |
| 5 | 7 | Connor MCCULLEN | 12 | Co Leeds | 3:20.70 |
| 6 | 5 | Angus YOUNG | 11 | Co Leeds | 3:32.43 |
| 7 | 3 | Hudson SMITH | 11 | Co Leeds | 3:46.10 |
| 8 | 1 | Leo LI | 10 | Co Leeds | 3:59.40 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 10 | Jacob BROOMFIELD | 17 | Chapeltown | 2:50.64 |
| 1 | 12 | Luke DYER | 15 | Co Leeds | 2:38.04 |
| 2 | 14 | Harry SENIOR | 16 | Co Leeds | 2:30.00 |
| 3 | 16 | Callum RAVEN | 14 | Co Leeds | 2:29.56 |
| 4 | 18 | Daniel CLIPSHAM | 16 | Co Wakefield | 2:23.30 |
| 5 | 17 | Alastair JEFFREY | 17 | Satellite | 2:28.70 |
| 6 | 15 | Maxwell FORD | 14 | Co Leeds | 2:30.00 |
| 7 | 13 | Thomas DENHAM-EVERETT | 18 | Satellite | 2:34.10 |
| 8 | 11 | Thomas BIDGOOD | 13 | Satellite | 2:46.88 |
| 9 | 9 | Jacob NIXON | 11 | Middlesboro | 3:15.50 |