Boys 12/13 Yrs 100m Freestyle - Heats (Declared Winners)
Full Results
| Place | Name | YoB | Club | | Time | | R.T. | FINA Pt | | 50 |
| 1. | Mackenzie Russell | (05) | Surrey | | 56.02 | | + 0.74 | | | 27.34 |
| 2. | William Baines | (05) | N & Durham | | 56.08 | | + 0.81 | | | 26.86 |
| 3. | R Rowbotham-Keating | (05) | Lancashire | | 56.52 | | + 0.80 | | | 27.15 |
| 4. | Sunni Johnson | (05) | Ox & N Bucks | | 57.91 | | + 0.68 | | | 28.15 |
| 5. | Archie Hawkins | (05) | Kent | | 57.93 | | + 0.71 | | | 28.13 |
| 6. | Curtis Harper | (05) | Yorkshire | | 58.29 | | + 0.77 | | | 28.08 |
| 7. | Alexander Coyle | (05) | Middlesex | | 58.31 | | + 0.61 | | | 28.10 |
| 8. | Duncan Young | (05) | Scot West | | 58.36 | | + 0.74 | | | 27.92 |
| 9. | Carwyn Jones | (06) | Swim Wales E | | 58.39 | | + 0.70 | | | 27.95 |
| 10. | Oskar Farkas | (05) | Cambs | | 58.63 | | + 0.76 | | | 28.06 |
| 11. | Jacob Whibley | (05) | Somerset | | 58.66 | | + 0.74 | | | 27.67 |
| 12. | Louis Walker | (05) | Essex | | 59.62 | | + 0.67 | | | 28.27 |
| 13. | Aaron Nakamura-Drew | (05) | Devon | | 59.92 | | + 0.79 | | | 28.47 |
| 14. | Alexander Cooper | (06) | Berks&SBucks | | 1:00.53 | | + 0.78 | | | 29.20 |
| 15. | Ashley Lucas | (05) | Northants | | 1:00.89 | | + 0.70 | | | 29.40 |
| 16. | Nikita McLean | (05) | Scot East | | 1:00.95 | | + 0.73 | | | 28.86 |
| 17. | Charlie Rowe | (05) | Dorset | | 1:01.59 | | + 0.83 | | | 29.16 |
| 18. | Aidan Pilcher | (05) | Suffolk | | 1:03.21 | | + 0.68 | | | 30.44 |
| 19. | William Poyser | (05) | Leics | | 1:04.85 | | + 0.80 | | | 31.33 |
| | Dylan Gwynne-Jones | (05) | Swim Wales W | | DQ | | | | | |
