Semi Final Mens 17/18 Yrs 50m Freestyle
| Place | Name | AaD | Club | Time | FINA Pt | |
| 1. | Patrick Clement | 18 | Haslemere | 23.65 | 792 | |
| 2. | Alex Garnett | 17 | Staines | 23.67 | 790 | |
| 3. | Edward Walsh | 18 | Camden Swiss | 23.68 | 789 | |
| 4. | Alexander Rust | 18 | Millfield | 24.07 | 751 | |
| 5. | Ashley Dougan | 18 | Gloucester | 24.16 | 743 | |
| 6. | David Dunn | 18 | Swansea Perf | 24.31 | 729 | |
| 7. | Karl Botha | 17 | Millfield | 24.36 | 725 | |
| 8. | Andrew Cumberlidge | 17 | Tynedale | 24.37 | 724 | |
| 9. | Liam Cosgrove | 18 | Kelly Coll | 24.38 | 723 | |
| 10. | Benjamin Clark | 17 | Plymouth Lea | 24.39 | 722 | |
| 11. | Andrew Donaldson | 17 | Ren 96 | 24.43 | 718 | |
| 12. | Charles Walker | 18 | Co Peterboro | 24.53 | 710 | |
| 13. | Robert Hoal | 18 | Ireland | 24.70 | 695 | |
| 14. | Joe Murphy | 18 | Ireland | 24.72 | 693 | |
| 15. | Oliver Prentice | 17 | Wirral Metro | 24.76 | 690 | |
| 16. | Thomas Booth | 17 | Bolton Metro | 24.79 | 688 | |
| 17. | Mark Saint-Clare | 18 | Millfield | 24.90 | 678 | |
| 18. | Gavin Williamson | 18 | Ireland | 24.99 | 671 | |
| 19. | Andrew Aitchison | 17 | West Lothiam | 25.01 | 670 | |
| 20. | Daniel Waddingham | 18 | Nuneaton | 25.46 | 635 | |
