Boys 15/UN 100m Breaststroke - Heats (Declared Winners)
Full Results
| Place | Name | YoB | Club | | Time | | R.T. | | | 50 |
| 1. | James Lewis | (98) | Co Cardiff | | 1:07.22 | | + 0.73 | | | 31.73 |
| 2. | James Sutton | (98) | Northampton | | 1:10.02 | | + 0.86 | | | 32.41 |
| 3. | Cian SENIOR | (98) | Co Sheffield | | 1:10.33 | | + 0.86 | | | 33.91 |
| 4. | Josh Lawson | (99) | Millfield | | 1:11.26 | | + 0.74 | | | 33.82 |
| 5. | Jacob Greenow | (99) | TauntonDeane | | 1:12.02 | | + 0.79 | | | 34.07 |
| 6. | Andrew ROY | (98) | Woking | | 1:14.52 | | + 0.81 | | | 35.26 |
| 7. | Miles Clark | (00) | Ealing | | 1:16.38 | | + 0.88 | | | 35.68 |
| 8. | Dominic SCIFO | (99) | teamipswich | | 1:16.45 | | + 0.84 | | | 35.91 |
| 9. | Sebastian Harding | (98) | Co Coventry | | 1:19.99 | | + 0.68 | | | 35.75 |
| 10. | Jack BACON | (99) | Ellesmere Co | | 1:20.92 | | + 0.91 | | | 36.72 |
