Boys 12/13 Yrs 100m Freestyle - Heats (Declared Winners)
Full Results
| Place | Name | YoB | Club | | Time | | R.T. | FINA Pt | | 50 |
| 1. | Edward Mildred | (03) | Northants | | 55.29 | | + 0.70 | 536 | | 27.48 |
| 2. | William Gearey | (03) | Worcs | | 55.42 | | + 0.67 | 533 | | 27.13 |
| 3. | Pierce Greening | (03) | Cumbria | | 56.99 | | + 0.46 | 490 | | 27.88 |
| 4. | Ethan Grace-Riches | (03) | Lincolnshire | | 57.22 | | + 0.87 | 484 | | 27.46 |
| 5. | Douglas Kelly | (03) | Scot West | | 57.57 | | + 0.68 | 475 | | 27.35 |
| 6. | Daniel Kingman | (03) | Dorset | | 1:00.20 | | + 0.94 | 416 | | 29.22 |
| 6. | Luca Riezzo | (03) | Devon | | 1:00.20 | | + 0.70 | 416 | | 29.19 |
| 8. | Dominik Strba | (03) | Sussex | | 1:00.84 | | + 0.74 | 403 | | 28.80 |
| 9. | Mitchell Cartlidge | (03) | Staffs | | 1:00.97 | | + 0.74 | 400 | | 28.91 |
| 10. | Matthew Newson | (03) | Cambs | | 1:01.03 | | + 0.66 | 399 | | 29.12 |
| 11. | Aaron Wilson | (03) | Shropshire | | 1:01.78 | | + 0.83 | 384 | | 29.29 |
| 12. | Alfie King | (03) | Norfolk | | 1:02.27 | | + 0.90 | 375 | | 30.44 |
| 13. | Ollie Ellison | (03) | Bedfordshire | | 1:02.38 | | + 0.55 | 373 | | 29.43 |
| 14. | Lawrence Martindale | (04) | Wiltshire | | 1:03.13 | | + 0.60 | 360 | | 30.05 |
| 15. | Rees Stewart | (03) | Cornwall | | 1:06.70 | | + 0.81 | 305 | | 32.68 |
| | Tommy Smith | (03) | Warwicks | | DQ | | | | | |
