Boys 16/17 Yrs 100m Backstroke - Heats (Declared Winners)
Full Results
| Place | Name | YoB | Club | | Time | | R.T. | FINA Pt | | 50 |
| 1. | Harry Noble | (01) | Devon | | 55.86 | | + 0.69 | | | 27.02 |
| 2. | Charlie Brown | (01) | Yorkshire | | 56.03 | | + 0.61 | | | 27.17 |
| 3. | Billy Dewhurst | (01) | Lancashire | | 56.61 | | + 0.72 | | | 27.30 |
| 4. | Keir Edgar | (01) | Scot West | | 56.66 | | + 0.60 | | | 27.85 |
| 5. | Daniel Jenkins | (01) | Ox & N Bucks | | 56.76 | | + 0.63 | | | 27.35 |
| 6. | Charlie Poole | (01) | Leics | | 56.93 | | + 0.63 | | | 27.79 |
| 7. | Samuel Perks | (02) | Essex | | 56.96 | | + 0.61 | | | 27.50 |
| 8. | Santos Villalon | (01) | Somerset | | 57.43 | | + 0.68 | | | 28.10 |
| 9. | Alexander Armstrong | (01) | Surrey | | 57.80 | | + 0.68 | | | 27.80 |
| 10. | Zachariah Speakman | (02) | Swim Wales E | | 58.30 | | + 0.68 | | | 28.00 |
| 11. | Moritz Hoogers | (01) | Berks&SBucks | | 58.39 | | + 0.67 | | | 27.72 |
| 12. | Ross Philp | (02) | Middlesex | | 58.49 | | + 0.60 | | | 28.50 |
| 13. | Manfred Battle | (02) | Cambs | | 58.54 | | + 0.68 | | | 28.29 |
| 14. | Liam McLaughlin | (02) | Scot East | | 58.82 | | + 0.74 | | | 29.26 |
| 15. | Oliver Fairman | (02) | Dorset | | 58.98 | | + 0.74 | | | 29.10 |
| 16. | Andre Strydom | (02) | Kent | | 59.96 | | + 0.67 | | | 29.00 |
| 17. | Aaron Beckford | (02) | N & Durham | | 1:00.14 | | + 0.69 | | | 29.10 |
| 18. | Archie Plowman | (01) | Northants | | 1:01.56 | | + 0.73 | | | 29.60 |
| 19. | Rhys Davies | (01) | Swim Wales W | | 1:01.80 | | + 0.72 | | | 29.71 |
| | Thomas Clare | (01) | Suffolk | | DQ | | | | | |
