Heats (Declared Winners) Girls 12/13 Yrs 100m Breaststroke
| Place | Name | AaD | Club | Time | R.Time | | 50 |
| 1. | Danielle Lowe | 13 | Lancashire | 1:12.32 | + 0.62 | | 34.13 |
| 2. | Laura Allison | 13 | N & Durham | 1:13.39 | + 0.72 | | 34.76 |
| 3. | Annabel Humphreys | 13 | Berks&SBucks | 1:13.99 | + 0.83 | | 35.11 |
| 4. | Freya Whitehead | 13 | Cheshire | 1:14.65 | -.-- | | 35.41 |
| 5. | Heather Rodwell | 13 | Suffolk | 1:15.24 | + 0.96 | | 35.79 |
| 6. | Siobhan-marie O'connor | 12 | Somerset | 1:15.37 | | | 35.50 |
| 7. | Emily Ard | 13 | Hampshire | 1:15.99 | + 0.84 | | 36.08 |
| 8. | Bethan Davie | 13 | South Wales | 1:16.58 | + 0.76 | | 36.58 |
| 9. | Jodie Hawksworth | 12 | Staffs | 1:16.70 | + 0.78 | | 36.78 |
| 10. | Chloe Thorpe | 13 | Kent | 1:17.13 | | | 36.50 |
| 11. | Chloe Bean | 13 | Surrey | 1:17.65 | | | 37.06 |
| 12. | Ella Graham | 13 | Derbyshire | 1:18.09 | + 0.76 | | 36.85 |
| 13. | Amy Medlock | 13 | Sussex | 1:18.34 | | | 36.41 |
| 14. | Charlotte Reid | 13 | Herts | 1:18.52 | | | 37.19 |
| 15. | Sophie Taylor | 12 | Yorkshire | 1:18.54 | + 0.85 | | 37.31 |
| 16. | Ailsa Small | 13 | Scot East | 1:19.66 | | | 37.28 |
| 17. | Georgia Jackson-virk | 13 | Middlesex | 1:19.75 | | | 37.68 |
| 18. | Nicole Esdaile | 13 | Wiltshire | 1:21.21 | | | 38.78 |
| 19. | Lauren Boland | 13 | Leics | 1:22.04 | | | 38.32 |
| 20. | Kathryn Jones | 13 | Warwicks | 1:24.74 | | | 40.36 |
