EVENT 202 Men Open 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Corey HESELTINE | 10 | Bassetlaw SS | 52.10 |
| 3 | 2 | Samuel BOWMAN | 12 | Newcastle St | 45.00 |
| 4 | 3 | Freddie COOKE - SOUTH | 11 | Bo Barnsley | 44.00 |
| 5 | 4 | Archie LOVATT | 12 | Newcastle St | 40.56 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Reuben MEADOWS | 12 | Bassetlaw SS | 39.96 |
| 2 | 6 | Noah DEWSNAP | 11 | Bassetlaw SS | 38.19 |
| 3 | 7 | Thomas COLLINS | 11 | Bassetlaw SS | 37.69 |
| 4 | 8 | C BUTTERELL-QUANBROUGH | 12 | Bassetlaw SS | 36.73 |
| 5 | 9 | Charlie WHEELER-KAYE | 13 | Bassetlaw SS | 32.35 |
| 6 | 10 | Seth HINITT | 15 | Bassetlaw SS | 31.48 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Ross GUNNING | 14 | Newcastle St | 31.48 |
| 2 | 12 | Layne KEYWORTH | 13 | Bassetlaw SS | 31.20 |
| 3 | 13 | Sam GUETTAT | 16 | Bo Barnsley | 31.13 |
| 4 | 14 | Samuel O'REILLY-SMITH | 14 | Newcastle St | 30.31 |
| 5 | 15 | Jacob HODKINSON | 14 | Bassetlaw SS | 29.58 |
| 6 | 16 | Joshua KETTLEWELL | 15 | Bassetlaw SS | 27.95 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 18 | Kalum SMART | 18 | Bo Barnsley | 27.03 |
| 2 | 20 | Cody INGRAM | 16 | Bo Barnsley | 26.70 |
| 3 | 22 | Lewis WARNER | 16 | Bassetlaw SS | 25.98 |
| 4 | 21 | Malachy MCGUINNESS | 18 | Bassetlaw SS | 26.58 |
| 5 | 19 | Callum KETTLEWELL | 18 | Bassetlaw SS | 26.96 |
| 6 | 17 | Cillian MCGUINNESS | 16 | Bassetlaw SS | 27.39 |