EVENT 106 Boys 14/15 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 1 | Abdel Abdi | 05 | Bedfordshire | 1:05.59 |
| 2 | 3 | Daniel Kennedy | 04 | Leics | 1:04.40 |
| 3 | 5 | Jack Smith | 04 | Cumbria | 1:02.83 |
| 4 | 7 | Sean Simmons | 05 | Gloucs | 1:01.87 |
| 5 | 6 | Shay Brent | 04 | Cornwall | 1:02.73 |
| 6 | 4 | Robert Addis | 04 | Norfolk | 1:03.28 |
| 7 | 2 | Rico Bringeman | 05 | Lincolnshire | 1:05.32 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 0 | 9 | Oskar Priesemann | 04 | Hampshire | 1:00.82 |
| 1 | 11 | Jack Haynes | 04 | Staffs | 1:00.25 |
| 2 | 13 | Connor Walker | 04 | Cambs | 59.91 |
| 3 | 15 | Oliver Carless | 04 | Warwicks | 58.32 |
| 4 | 17 | Michael Klimaszewski | 04 | SE Herts | 55.85 |
| 5 | 16 | Antonio Rodriguez | 04 | Swim Wales W | 58.03 |
| 6 | 14 | Elijah Kendrick | 04 | Sussex | 59.13 |
| 7 | 12 | Isaac Ellis | 04 | Dorset | 1:00.24 |
| 8 | 10 | Joshua Gough | 04 | Worcs | 1:00.71 |
| 9 | 8 | Aidan McMullan | 04 | Wiltshire | 1:01.73 |