EVENT 204 Open/Male 200m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Archie Murgatroyd | 13 | Middlesboro | |
| 3 | 3 | Matthew Blackmore | 12 | Middlesboro | 3:24.23 |
| 4 | 2 | Samuel Davies | 10 | Middlesboro | 3:36.79 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Ethan Paylor | 12 | Middlesboro | 2:59.80 |
| 2 | 8 | Oscar Jackson | 14 | Darlington | 2:51.71 |
| 3 | 10 | Jacob Money | 14 | Guisborough | 2:41.83 |
| 4 | 9 | Harvey Watson | 12 | Middlesboro | 2:46.41 |
| 5 | 7 | Sebastian Dalby | 13 | Middlesboro | 2:55.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 13 | Nikhil Shouri | 15 | Bo Stockton | 2:34.74 |
| 2 | 15 | Harrison Spink | 15 | Bo Stockton | 2:30.24 |
| 3 | 17 | Ethan Reddivari | 14 | Middlesboro | 2:28.50 |
| 4 | 16 | Jacob Nixon | 14 | Middlesboro | 2:29.52 |
| 5 | 14 | Lewis Peggs | 15 | Loftus Dol | 2:32.34 |
| 6 | 12 | William Proud | 13 | Middlesboro | 2:35.90 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | William Chadaway | 15 | Bo Stockton | 2:25.51 |
| 2 | 21 | Lewis Kestle | 17 | Darlington | 2:17.98 |
| 3 | 23 | Robert Shipley | 15 | Middlesboro | 2:10.00 |
| 4 | 22 | Alexander Morton | 16 | Darlington | 2:15.07 |
| 5 | 20 | Jack Waterson | 13 | Middlesboro | 2:24.90 |
| 6 | 18 | Stanley Dawson | 14 | Middlesboro | 2:28.30 |