Boys 12/13 Yrs 100m Breaststroke - Heats (Declared Winners)
Full Results
| Place | Name | YoB | Club | | Time | | | | | 50 |
| 1. | Alexander Rogers | (99) | Warwicks | | 1:12.54 | | | | | 34.12 |
| 2. | Lewis Fraser | (00) | Swim Wales W | | 1:13.34 | | | | | 35.48 |
| 3. | Conor Keye | (99) | Wiltshire | | 1:13.36 | | | | | 34.57 |
| 4. | Jordan Bull | (99) | Lincolnshire | | 1:13.48 | | | | | 34.46 |
| 5. | Ashley Markall | (99) | Worcs | | 1:14.29 | | | | | 35.70 |
| 6. | James Wamsley | (99) | Devon | | 1:15.01 | | | | | 34.62 |
| 7. | Connor Joyce | (00) | Cumbria | | 1:15.46 | | | | | 35.59 |
| 8. | Jack Melia | (98) | Leics | | 1:15.92 | | | | | 35.46 |
| 9. | Nicholas Savill | (98) | Sussex | | 1:15.94 | | | | | 35.46 |
| 10. | George Bennett | (99) | Norfolk | | 1:16.25 | | | | | 36.25 |
| 11. | Jamie Ingledew | (98) | Scot Midland | | 1:16.68 | | | | | 35.50 |
| 12. | George Rodger | (98) | Bedfordshire | | 1:16.70 | | | | | 36.04 |
| 13. | Sydney Newnham-Stebbin | (99) | Suffolk | | 1:18.25 | | | | | 37.47 |
| 14. | Nico Winkler | (99) | Northants | | 1:18.75 | | | | | 37.16 |
| 15. | Tyler McLean | (00) | Shropshire | | 1:19.01 | | | | | 36.72 |
| 16. | Thomas Harrington | (98) | Cambs | | 1:19.23 | | | | | 36.88 |
| 17. | Andrew Flanigan | (00) | Swim Wales E | | 1:19.54 | | | | | 37.91 |
| 18. | Benjamin Waller | (99) | Cornwall | | 1:24.36 | | | | | 39.21 |
| | Will Cole | (99) | Gloucs | | DNC | | | | | |
