Semi Final Mens 17/18 Yrs 100m Freestyle
| Place | Name | AaD | Club | Time | FINA Pt | | 50 |
| 1. | Edward Walsh | 18 | Camden Swiss | 51.65 | 818 | | 24.64 |
| 2. | Ross Douglas | 18 | StirlingSwim | 52.30 | 788 | | 24.80 |
| 3. | Thomas Booth | 17 | Bolton Metro | 52.31 | 787 | | 25.40 |
| 4. | Jonathan Greig | 18 | StirlingSwim | 52.36 | 785 | | 25.52 |
| 5. | Richard Schafers | 17 | StirlingSwim | 52.49 | 779 | | 25.60 |
| 6. | Patrick Clement | 18 | Haslemere | 52.51 | 778 | | 25.24 |
| 7. | Joe Murphy | 18 | Ireland | 52.61 | 774 | | 25.24 |
| 8. | Jak Scott | 17 | Dunedin ST | 52.89 | 762 | | 25.40 |
| 9. | Robert Hoal | 18 | Ireland | 52.94 | 759 | | 25.23 |
| 10. | Jamie Broom | 18 | Derventio | 52.95 | 759 | | 25.65 |
| 10. | Charles Walker | 18 | Co Peterboro | 52.95 | 759 | | 25.62 |
| 12. | James Cowburn | 17 | Stockport Mo | 53.00 | 757 | | 25.71 |
| 13. | Thomas Laxton | 18 | CarmarthenWP | 53.11 | 752 | | 25.30 |
| 14. | Liam Cosgrove | 18 | Kelly Coll | 53.15 | 750 | | 25.94 |
| 15. | Andrew Cumberlidge | 17 | Tynedale | 53.17 | 750 | | 25.32 |
| 16. | Daniel Waddingham | 18 | Nuneaton | 53.25 | 746 | | 25.88 |
| 17. | Richard Butler | 17 | KingstonHull | 53.36 | 742 | | 25.84 |
| 18. | Valentin Kokorin | 17 | Co Newcastle | 53.65 | 730 | | 26.01 |
| 19. | David Dunn | 18 | Swansea Perf | 53.85 | 722 | | 25.81 |
| 20. | Alexander Rust | 18 | Millfield | 54.50 | 696 | | 25.81 |
