EVENT 106 Boys 14/15 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 2 | George Hart | 01 | Bedfordshire | 1:07.51 |
| 2 | 4 | William Steel | 01 | Cambs | 1:03.50 |
| 3 | 6 | Jacob Davies | 02 | Staffs | 1:02.37 |
| 4 | 8 | Louis Mitchell | 01 | Northants | 1:01.96 |
| 5 | 7 | Joel Clarke | 01 | Norfolk | 1:02.20 |
| 6 | 5 | Zachary Broomfield | 01 | Cornwall | 1:03.49 |
| 7 | 3 | Alexander Sharman | 02 | Wiltshire | 1:03.70 |
| 8 | 1 | Jacob Shinton | 01 | Shropshire | 1:10.33 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 10 | Joel Sinclair | 02 | Cumbria | 1:01.75 |
| 2 | 12 | Craig Greenock | 01 | Scot West | 1:01.26 |
| 3 | 14 | Christian Tai | 01 | Dorset | 59.30 |
| 4 | 16 | Samuel Osborne | 01 | Worcs | 57.90 |
| 5 | 15 | Joel Thompson | 01 | Sussex | 59.10 |
| 6 | 13 | Leo Karski | 01 | Warwicks | 1:00.03 |
| 7 | 11 | Reid Jones | 02 | Devon | 1:01.30 |
| 8 | 9 | Thomas Adams | 02 | Lincolnshire | 1:01.82 |