EVENT 106 Boys 14/15 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Edward McFarland | 14 | Bedfordshire | 1:08.20 |
| 2 | 3 | Samuel Greenbank | 14 | Cumbria | 1:04.55 |
| 3 | 5 | James Goodwin | 15 | Warwicks | 1:02.98 |
| 4 | 7 | Callum Rushan | 15 | Staffs | 1:01.89 |
| 5 | 6 | James Cox | 14 | Gloucs | 1:02.30 |
| 6 | 4 | Robert Brittle | 15 | Cornwall | 1:03.45 |
| 7 | 2 | Alexander Rosser-Barne | 14 | Shropshire | 1:07.25 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 9 | Thomas Sansome | 14 | Berks&SBucks | 1:01.77 |
| 1 | 11 | William Brookes | 15 | Derbyshire | 1:00.90 |
| 2 | 13 | Oliver Reek | 15 | Norfolk | 59.30 |
| 3 | 15 | Tom Adams | 15 | Lincolnshire | 58.40 |
| 4 | 17 | Matthew Richards | 15 | Worcs | 55.90 |
| 5 | 16 | Edward Mildred | 14 | Northants | 56.60 |
| 6 | 14 | Rhys Edwards | 15 | Swim Wales W | 58.95 |
| 7 | 12 | Reese Housden | 15 | Herts | 1:00.29 |
| 8 | 10 | Myles Robinson-Young | 15 | Cambs | 1:01.14 |
| 9 | 8 | Alexander Sharman | 15 | Wiltshire | 1:01.89 |