EVENT 404 Open/Male 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Henry PATTERSON | 9 | Co Leeds | 4:00.00 |
| 3 | 3 | George RICKETTS | 10 | Co Leeds | 3:45.00 |
| 4 | 5 | Barney HOBBS | 11 | Co Leeds | 3:40.00 |
| 5 | 4 | Tyler GREEN | 10 | Co Leeds | 3:45.00 |
| 6 | 2 | Zac PHILLIPS | 9 | Co Leeds | 3:56.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 7 | Jack WATERSON | 12 | Middlesboro | 3:39.00 |
| 1 | 9 | Charlie KERSHAW | 10 | Donc Dartes | 3:30.00 |
| 2 | 11 | Sebastian DALBY | 11 | Middlesboro | 3:26.50 |
| 3 | 13 | Noah DARNELL | 12 | Co Leeds | 3:20.00 |
| 4 | 15 | Alexander EGGITT | 12 | Donc Dartes | 3:13.90 |
| 5 | 14 | George KING | 11 | Co Leeds | 3:15.00 |
| 6 | 12 | Owen TEMPEST | 12 | Co Leeds | 3:20.04 |
| 7 | 10 | Olaf GRUDOWSKI | 12 | Co Leeds | 3:29.08 |
| 8 | 8 | Tomas BICKERS | 11 | Co Leeds | 3:30.00 |
| 9 | 6 | Zachary WHITTAKER | 10 | Co Leeds | 3:39.72 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 17 | Joe DUMPHY-BROOK | 10 | Middlesboro | 3:11.30 |
| 1 | 19 | Alfie CRAGGS | 12 | Co Leeds | 3:06.60 |
| 2 | 21 | Jeffrey LANGE | 12 | Co Leeds | 3:02.22 |
| 3 | 23 | Oscar O'DONNELL | 11 | Co Leeds | 2:50.90 |
| 4 | 25 | Shae BRYANT | 13 | Co Leeds | 2:49.20 |
| 5 | 24 | Benjamin WALKER | 16 | Stocksbridge | 2:50.50 |
| 6 | 22 | Oliver BARRETT | 12 | Co Leeds | 2:58.60 |
| 7 | 20 | Oliver ATHA | 12 | Co Leeds | 3:03.06 |
| 8 | 18 | Callum FOZARD | 12 | Co Leeds | 3:08.51 |
| 9 | 16 | William PROUD | 12 | Middlesboro | 3:13.60 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 27 | Matei STOICESCU | 13 | Co Leeds | 2:39.70 |
| 1 | 29 | Patrick O'HARA | 13 | Co Leeds | 2:38.10 |
| 2 | 31 | Joseph HALL | 15 | Co Leeds | 2:24.00 |
| 3 | 33 | Tin Ho CHEUNG | 15 | Co Leeds | 2:23.85 |
| 4 | 35 | Oliver SMITH | 15 | Middlesboro | 2:13.00 |
| 5 | 34 | Matthew JAMES | 15 | Co Leeds | 2:20.15 |
| 6 | 32 | Luke DYER | 16 | Co Leeds | 2:23.91 |
| 7 | 30 | William DALE-WOOD | 14 | Thirsk WH | 2:30.40 |
| 8 | 28 | Alfie YOUNG | 14 | Co Leeds | 2:39.00 |
| 9 | 26 | Ethan REDDIVARI | 12 | Middlesboro | 2:40.10 |