EVENT 101 Boy Open 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Max ATTWATER | 12 | Chesterfield | |
| 3 | 4 | Lewis WHITE | 16 | Sheffield C | |
| 4 | 6 | Edward GREGORY | 10 | Sherwood | 2:06.30 |
| 5 | 5 | Joshua GILBERT | 10 | Chesterfield | 2:26.60 |
| 6 | 3 | Calin TOMOZEI | 13 | Chesterfield | |
| 7 | 1 | Matthew WILSON | 17 | Dronfield | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Oliver WILLIS | 15 | Bircotes SC | 1:25.00 |
| 2 | 10 | Jack BAINBRIDGE | 14 | Chesterfield | 1:19.35 |
| 3 | 12 | Ben MCCREADY | 14 | Sheffield C | 1:15.00 |
| 4 | 14 | James PRIDMORE | 17 | NottNorthern | 1:10.30 |
| 5 | 13 | Matthew FOREMAN | 16 | Buxton | 1:12.27 |
| 6 | 11 | Sam KNIGHTS | 16 | Chesterfield | 1:18.80 |
| 7 | 9 | Sebastian WILKINSON | 17 | Bircotes SC | 1:22.50 |
| 8 | 7 | Rohan CLARKE | 12 | Chesterfield | 1:49.80 |