EVENT 104 Boys 12/13 Yrs 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | George Cowan | 12 | Scot Midland | 1:35.78 |
| 1 | 3 | Michael Lardner | 13 | Cambs | 1:22.74 |
| 2 | 5 | Matthew Seabrook | 13 | Devon | 1:21.63 |
| 3 | 7 | Myles Turner | 13 | Suffolk | 1:21.34 |
| 4 | 9 | Christopher D'Agostino | 13 | Northants | 1:20.13 |
| 5 | 8 | Jordan Ludlam | 12 | Wiltshire | 1:20.14 |
| 6 | 6 | Chris Malone | 13 | Gloucs | 1:21.52 |
| 7 | 4 | William Swain | 13 | Lincolnshire | 1:22.51 |
| 8 | 2 | Jack Rogers | 13 | Cornwall | 1:25.98 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 11 | Rhys Chiles | 13 | Leics | 1:18.74 |
| 1 | 13 | Gregory Butler | 12 | Staffs | 1:18.63 |
| 2 | 15 | Arron Esson | 13 | Scot North | 1:18.14 |
| 3 | 17 | Kyle Palmer | 13 | Warwicks | 1:16.94 |
| 4 | 19 | Connor Joyce | 13 | Cumbria | 1:13.07 |
| 5 | 18 | Tyler McLean | 13 | Shropshire | 1:15.57 |
| 6 | 16 | Alexander Stoner | 13 | Norfolk | 1:17.90 |
| 7 | 14 | Patrick Keaveney | 13 | Bedfordshire | 1:18.22 |
| 8 | 12 | Kelvin Wong | 12 | Dorset | 1:18.73 |
| 9 | 10 | Louis Spong | 13 | Essex | 1:18.88 |