Semi Final Womens 16/17 Yrs 100m Backstroke
| Place | Name | AaD | Club | Time | FINA Pt | | 50 |
| 1. | Lauren Collins | 17 | Co Birm'ham | 1:04.33 | 823 | | 31.35 |
| 2. | Laura Jamison | 17 | Long Eaton | 1:04.62 | 812 | | 31.57 |
| 3. | Kirsty Hart | 17 | Ren 96 | 1:05.07 | 795 | | 31.92 |
| 4. | Chelsey Wilson | 17 | Ireland | 1:05.42 | 783 | | 31.95 |
| 5. | Henrietta Dillon | 16 | Guildford Ct | 1:05.98 | 763 | | 32.05 |
| 6. | Katrina Alder | 16 | Co Salford | 1:06.10 | 759 | | 32.13 |
| 7. | Caroline Brady | 17 | Guildford Ct | 1:06.41 | 748 | | 32.22 |
| 8. | Bo Cameron | 16 | Plymouth Lea | 1:06.46 | 747 | | 32.48 |
| 9. | Charlotte Broadbent | 17 | Co Sheffield | 1:06.67 | 740 | | 32.85 |
| 10. | Laura Huggon | 17 | Penrith | 1:06.69 | 739 | | 32.56 |
| 11. | Rebecca Reader | 16 | Team Ipswich | 1:06.94 | 731 | | 32.78 |
| 12. | Deanna Matthews | 16 | Canada | 1:06.99 | 729 | | 32.75 |
| 13. | Sarah Gibson | 17 | Peterlee | 1:07.47 | 714 | | 32.16 |
| 14. | Danielle Amson | 16 | Leek | 1:07.57 | 710 | | 32.81 |
| 15. | Sarah Powell | 16 | Maxwell | 1:08.86 | 671 | | 33.49 |
| 16. | Katie Bell | 16 | Cockermouth | 1:08.94 | 669 | | 33.47 |
| 17. | Georgia Hunton-Clarke | 17 | BorRedbridge | 1:08.98 | 668 | | 33.25 |
| 18. | Eve Mackey | 16 | Co Newcastle | 1:09.02 | 667 | | 33.14 |
| 19. | Laura Ingleson | 17 | UEA Norwich | 1:10.09 | 636 | | 33.61 |
