Heats (Declared Winners) Boys 16/17 Yrs 100m Butterfly
| Place | Name | AaD | Club | Time | | | 50 |
| 1. | Cameron Brodie | 16 | Devon | 57.05 | | | 26.80 |
| 2. | James Davies | 17 | North Wales | 57.83 | | | 27.18 |
| 3. | Calum Mcghee | 17 | Scot West | 58.02 | | | 27.70 |
| 4. | Christopher Campbell | 17 | Dorset | 58.16 | | | 27.07 |
| 5. | Dean Smith | 17 | Essex | 59.30 | | | 27.66 |
| 6. | Keith Beveridge | 17 | Scot North | 59.75 | | | 27.87 |
| 7. | Steffan Williams | 17 | Shropshire | 1:00.17 | | | 28.04 |
| 8. | Jack Johnson | 17 | Northants | 1:01.10 | | | 28.74 |
| 9. | Ben Dixon | 17 | Notts | 1:01.23 | | | 28.83 |
| 10. | Laurence Hickin | 16 | Worcs | 1:02.19 | | | 28.64 |
| 11. | Sam Long | 17 | Cornwall | 1:02.32 | | | 29.38 |
| 12. | Josh Purnell | 16 | Gloucs | 1:02.59 | | | 29.20 |
| 13. | James Harrison | 16 | Lincolnshire | 1:02.60 | | | 29.02 |
| 14. | George Twentyman | 17 | Cumbria | 1:03.04 | | | 29.90 |
| 15. | Jordan Bate | 16 | Norfolk | 1:03.11 | | | 29.34 |
| 16. | Andrew Weatheritt | 17 | Cambs | 1:03.32 | | | 28.94 |
| 17. | Teddy Loveridge | 16 | Ox & N Bucks | 1:03.47 | | | 29.71 |
| 18. | Loren Chamberlain-clar | 17 | Bedfordshire | 1:08.98 | | | 31.64 |
