Girls 12/13 Yrs 100m Breaststroke - Heats (Declared Winners)
Full Results
| Place | Name | YoB | Club | | Time | | R.T. | FINA Pt | | 50 |
| 1. | Hermione Roe | (05) | Yorkshire | | 1:13.16 | | + 0.71 | | | 34.38 |
| 2. | Jodie Dilks | (05) | Devon | | 1:14.16 | | + 0.81 | | | 35.18 |
| 3. | Louise Bressler | (06) | Surrey | | 1:14.51 | | + 0.67 | | | 35.35 |
| 4. | Emily Jones | (05) | Swim Wales E | | 1:14.64 | | + 0.75 | | | 36.00 |
| 5. | Merissa Booth | (05) | Berks&SBucks | | 1:15.33 | | + 0.67 | | | 35.83 |
| 6. | Jenna Dougal | (05) | N & Durham | | 1:15.61 | | + 0.72 | | | 36.15 |
| 7. | Ella McEver | (05) | Middlesex | | 1:15.84 | | + 0.77 | | | 35.96 |
| 7. | Gracie Hudson | (05) | Ox & N Bucks | | 1:15.84 | | + 0.79 | | | 36.05 |
| 9. | Charlotte White | (05) | Suffolk | | 1:16.01 | | + 0.72 | | | 35.84 |
| 10. | Ruby Varney | (05) | Somerset | | 1:16.12 | | + 0.88 | | | 36.06 |
| 11. | Saskia Wade | (05) | Scot West | | 1:16.95 | | + 0.66 | | | 35.65 |
| 12. | Kara Dimond | (05) | Kent | | 1:18.27 | | + 0.68 | | | 35.92 |
| 13. | Neha Pillai | (05) | Essex | | 1:18.58 | | + 0.79 | | | 35.84 |
| 14. | Sienna Burgess | (05) | Swim Wales W | | 1:18.64 | | + 0.75 | | | 37.08 |
| 15. | Hayley Mair | (05) | Leics | | 1:19.23 | | + 0.70 | | | 37.66 |
| 16. | Amy Grovestock | (05) | Lancashire | | 1:19.24 | | + 0.77 | | | 37.67 |
| 17. | Louisa Stoddart | (05) | Scot East | | 1:19.56 | | + 0.74 | | | 36.95 |
| 18. | Saskia Van Der Schouw | (05) | Dorset | | 1:21.36 | | + 0.75 | | | 37.99 |
| 19. | Macy Dexter | (06) | Cambs | | 1:21.43 | | + 0.75 | | | 37.91 |
| 20. | Poppy Hogg | (05) | Northants | | 1:23.65 | | + 0.83 | | | 38.95 |
