EVENT 207 Boys 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Luca ROYLE | 11 | Rotherham Mo | 2:28.00 |
| 3 | 3 | Valentine STANILAND | 10 | Rotherham Mo | 1:55.00 |
| 4 | 2 | Oscar PARKINSON | 11 | Etwall | 2:00.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Jack HATCH | 13 | Gainsborough | 1:35.02 |
| 3 | 7 | Oliver CLARKE | 11 | Deepings | 1:31.43 |
| 4 | 6 | Frederick WILLIAMS | 11 | Eckington | 1:34.30 |
| 5 | 4 | Noah LODGE | 12 | Eckington | 1:43.30 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 9 | William FINNIE | 11 | Rotherham Mo | 1:30.44 |
| 2 | 11 | Jacob HARNESS | 13 | Bassetlaw SS | 1:21.83 |
| 3 | 13 | James THOMAS | 13 | Gainsborough | 1:19.00 |
| 4 | 12 | Edward ROSE | 11 | Rotherham Mo | 1:20.90 |
| 5 | 10 | Reuben MEADOWS | 13 | Bassetlaw SS | 1:22.78 |
| 6 | 8 | Kieron TOMS | 13 | Deepings | 1:30.51 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Noah DEWSNAP | 12 | Bassetlaw SS | 1:11.80 |
| 2 | 17 | Harrison DEEKS | 16 | Rotherham Mo | 1:08.88 |
| 3 | 19 | Jacob BRIERS | 15 | Deepings | 1:07.10 |
| 4 | 18 | Samuel GREEN | 13 | Bassetlaw SS | 1:08.00 |
| 5 | 16 | Oliver SHEPHERD | 14 | Deepings | 1:11.53 |
| 6 | 14 | Jack BELL | 14 | Deepings | 1:15.54 |