Heats (Declared Winners) Girls 12/13 Yrs 100m Breaststroke
| Place | Name | AaD | Club | Time | | | 50 |
| 1. | Alexandra HARRISON | 13 | Suffolk ASA | 1:12.02 | | | 34.42 |
| 2. | Sara LOUGHER | 13 | South Wales | 1:13.55 | | | 35.17 |
| 3. | Laura ALLISON | 12 | Northumb&Dur | 1:14.53 | | | 35.32 |
| 4. | Carmella KITCHING | 13 | Middlesex Co | 1:15.68 | | | 35.55 |
| 5. | Abigail MUNDY | 13 | Surrey Co AS | 1:16.03 | | | 36.50 |
| 6. | Lucy BUDIMIR | 13 | YorkshireASA | 1:16.13 | | | 36.21 |
| 7. | Brogan DEAN | 13 | Lancashire C | 1:16.61 | | | 36.41 |
| 8. | Sophie ELPHICK | 13 | Berks&SBucks | 1:16.66 | | | 36.21 |
| 9. | Philippa COCHRAN | 13 | KentCounASA | 1:17.37 | | | 36.61 |
| 10. | Lisa MAIN | 13 | Scotland Eas | 1:17.40 | | | 36.21 |
| 11. | Eleanor TAYLOR | 13 | Derbyshi ASA | 1:17.75 | | | 36.66 |
| 12. | Freya WHITEHEAD | 12 | CheshireCo | 1:17.85 | | | 36.89 |
| 13. | Leanna MARSHALL | 12 | Scotland Wes | 1:18.56 | | | 37.05 |
| 14. | Megan CUMMING | 13 | Hampshire Co | 1:18.59 | | | 36.91 |
| 15. | Carina BAYS | 13 | HertfordsASA | 1:19.04 | | | 37.29 |
| 16. | Elanor LOVEMAN | 13 | SussexCounty | 1:20.19 | | | 37.73 |
| 17. | Danielle SHROSBREE | 13 | DorsetCounty | 1:20.48 | | | 37.23 |
| 18. | Zara MCLAREN | 13 | Nottinghamsh | 1:20.88 | | | 38.34 |
| 19. | Sophie NURCOMBE | 13 | SomersetCoun | 1:21.68 | | | 38.71 |
| 20. | Emma MCAULIFFE | 13 | EssexCounASA | 1:23.25 | | | 39.27 |
