Girls 12/13 Yrs 100m Butterfly - Heats (Declared Winners)
Full Results
| Place | Name | YoB | Club | | Time | | | | | 50 |
| 1. | Bethan Connolly | (98) | Swim Wales E | | 1:06.94 | | | | | 31.36 |
| 2. | Tazmin Pugh | (00) | Worcs | | 1:07.14 | | | | | 31.58 |
| 3. | Katherine Brown | (99) | Cambs | | 1:07.57 | | | | | 31.84 |
| 4. | Chloe Barrow | (98) | Devon | | 1:07.96 | | | | | 31.82 |
| 5. | Tara Haworth | (99) | Lincolnshire | | 1:08.00 | | | | | 32.16 |
| 6. | Rebecca Dalling | (99) | Swim Wales W | | 1:08.51 | | | | | 32.48 |
| 7. | Laura Davison | (00) | Cumbria | | 1:09.54 | | | | | 32.95 |
| 8. | Luiza Farache-Trajano | (99) | Sussex | | 1:09.77 | | | | | 31.86 |
| 9. | Evie Reed | (98) | Gloucs | | 1:10.76 | | | | | 32.93 |
| 10. | Sophie Stables | (00) | Warwicks | | 1:10.93 | | | | | 33.15 |
| 11. | Hannah Knight | (99) | Leics | | 1:11.13 | | | | | 33.20 |
| 12. | Lauren Doughty | (99) | Scot Midland | | 1:11.18 | | | | | 33.36 |
| 13. | Chloe Davies | (98) | Wiltshire | | 1:12.29 | | | | | 33.41 |
| 14. | Rebecca Sherwin | (00) | Suffolk | | 1:12.58 | | | | | 34.14 |
| 15. | Bethany Saunders | (99) | Northants | | 1:13.15 | | | | | 34.02 |
| 16. | Bethany Dolan | (99) | Bedfordshire | | 1:14.73 | | | | | 35.02 |
| 17. | Lauren Holland | (98) | Shropshire | | 1:14.79 | | | | | 34.86 |
| 18. | Sasha Dyke | (99) | Norfolk | | 1:15.22 | | | | | 33.77 |
| 19. | Ellie Pollock | (00) | Cornwall | | 1:22.37 | | | | | 35.93 |
