EVENT 505 Boys 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Isaac SIMPSON | 10 | Bassetlaw SS | 1:04.32 |
| 3 | 3 | Reid HUTCHINS | 9 | Bassetlaw SS | 1:00.52 |
| 4 | 2 | Dexter BARRON | 11 | Bassetlaw SS | 1:02.40 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 5 | Brendan THOMPSON | 11 | Bassetlaw SS | 54.67 |
| 2 | 7 | Xander ARBON | 12 | Bassetlaw SS | 44.52 |
| 3 | 9 | Corey HESELTINE | 11 | Bassetlaw SS | 40.41 |
| 4 | 8 | Tudor BRINDUSE | 11 | Rotherham Mo | 41.66 |
| 5 | 6 | Brayden LEE | 11 | Etwall | 53.22 |
| 6 | 4 | Valentine STANILAND | 10 | Rotherham Mo | 56.60 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Edward ROSE | 11 | Rotherham Mo | 38.27 |
| 2 | 13 | Reuben MEADOWS | 13 | Bassetlaw SS | 35.44 |
| 3 | 15 | Noah DEWSNAP | 12 | Bassetlaw SS | 32.70 |
| 4 | 14 | Thomas COLLINS | 13 | Bassetlaw SS | 34.00 |
| 5 | 12 | Toby BANKS | 14 | Eckington | 38.25 |
| 6 | 10 | Kieron TOMS | 13 | Deepings | 38.45 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 17 | Danny BARRON | 15 | Etwall | 31.80 |
| 2 | 19 | Harry BRANCHAM | 17 | Bassetlaw SS | 30.90 |
| 3 | 21 | Layne KEYWORTH | 15 | Bassetlaw SS | 27.90 |
| 4 | 20 | Samuel GREEN | 13 | Bassetlaw SS | 30.07 |
| 5 | 18 | C BUTTERELL-QUANBROUGH | 13 | Bassetlaw SS | 31.60 |
| 6 | 16 | Leo GARRISON | 16 | Gainsborough | 32.30 |