Boys 12/13 Yrs 100m Breaststroke - Heats (Declared Winners)
Full Results
| Place | Name | YoB | Club | | Time | | R.T. | FINA Pt | | 50 |
| 1. | Stefan Krawiec | (06) | Scot East | | 1:10.15 | | + 0.71 | | | 33.31 |
| 2. | Sunni Johnson | (05) | Ox & N Bucks | | 1:10.16 | | + 0.65 | | | 33.03 |
| 3. | Christian Ryan | (05) | N & Durham | | 1:10.65 | | + 0.79 | | | 33.60 |
| 4. | Alfie Francis | (05) | Essex | | 1:10.80 | | + 0.69 | | | 33.06 |
| 5. | Jamie O'Connor | (05) | Devon | | 1:12.69 | | + 0.66 | | | 33.06 |
| 6. | Ryan Sandilands | (05) | Scot West | | 1:12.78 | | + 0.70 | | | 34.04 |
| 7. | Cameron Green | (05) | Yorkshire | | 1:13.03 | | + 0.69 | | | 33.40 |
| 8. | Richard Towers | (05) | Somerset | | 1:13.45 | | + 0.68 | | | 34.28 |
| 9. | Edward Merhan | (05) | Suffolk | | 1:13.99 | | + 0.73 | | | 34.36 |
| 10. | Tristyn James | (06) | Swim Wales E | | 1:14.18 | | + 0.62 | | | 34.79 |
| 11. | Callum Woolfenden | (05) | Kent | | 1:14.97 | | + 0.67 | | | 35.35 |
| 12. | Dan Hicks | (05) | Surrey | | 1:15.19 | | + 0.70 | | | 35.31 |
| 13. | Samuel Smith | (05) | Northants | | 1:15.41 | | + 0.67 | | | 36.35 |
| 14. | Lewis Crosby | (05) | Lancashire | | 1:15.82 | | + 0.72 | | | 35.63 |
| 15. | Oliver Wright | (05) | Middlesex | | 1:16.24 | | + 0.68 | | | 35.56 |
| 16. | Can Tugcetin | (05) | Berks&SBucks | | 1:18.23 | | + 0.65 | | | 36.82 |
| 17. | Hans Schmidt | (05) | Swim Wales W | | 1:18.73 | | + 0.65 | | | 37.10 |
| 17. | Lawrence Elliott | (05) | Dorset | | 1:18.73 | | + 0.78 | | | 37.62 |
| 19. | Eduardo Camacho | (05) | Cambs | | 1:19.78 | | + 0.70 | | | 37.71 |
| 20. | Samuel Munroe | (05) | Leics | | 1:22.41 | | + 0.69 | | | 38.00 |
