EVENT 106 Boys 14/15 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | William Adhemar | 15 | Northants | 1:07.39 |
| 1 | 3 | William McIntyre | 14 | Lincolnshire | 1:04.00 |
| 2 | 5 | Thomas McCallum | 14 | Worcs | 1:03.10 |
| 3 | 7 | Lucas Gregory | 15 | Warwicks | 1:03.06 |
| 4 | 9 | Ricky Griggs | 15 | Wiltshire | 1:02.05 |
| 5 | 8 | Elliot Hughes | 15 | Shropshire | 1:02.69 |
| 6 | 6 | Harry Burnell | 14 | Sussex | 1:03.07 |
| 7 | 4 | Elliott Tointon | 15 | Leics | 1:03.60 |
| 8 | 2 | Charlie Haynes | 15 | Cornwall | 1:05.91 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 11 | Craig Munden | 15 | Gloucs | 1:01.87 |
| 1 | 13 | Louis Gautier | 15 | Devon | 1:01.37 |
| 2 | 15 | Daniel Brown | 14 | Cambs | 1:00.40 |
| 3 | 17 | Luke Greenbank | 15 | Cumbria | 58.91 |
| 4 | 19 | Jonah Lewis | 15 | Swim Wales W | 58.87 |
| 5 | 18 | Jake Tyson | 15 | Suffolk | 58.91 |
| 6 | 16 | Ben Baston | 15 | Swim Wales E | 59.82 |
| 7 | 14 | Jack Utting | 15 | Norfolk | 1:01.19 |
| 8 | 12 | Oliver Maltby | 15 | Bedfordshire | 1:01.68 |
| 9 | 10 | Adam Murray | 15 | Scot Midland | 1:01.96 |