EVENT 407 Boy Open 100m Breaststroke - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Bruce DEE | 15 | Northampton | 1:47.60 |
| 3 | 3 | Jacob TAYLOR | 12 | Northampton | 1:34.73 |
| 4 | 2 | Liam LYONS | 12 | Derventio | 1:35.78 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Jack HURRY | 12 | Northampton | 1:34.63 |
| 2 | 6 | Zachary DRAYSON | 12 | Derventio | 1:28.63 |
| 3 | 8 | Eamonn DJERIDI | 13 | Royal Wolv | 1:23.70 |
| 4 | 7 | Jack BIGNELL | 13 | Northampton | 1:27.35 |
| 5 | 5 | Edward OSCROFT | 12 | Northampton | 1:28.87 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Finn DRYSDALE | 16 | Royal Wolv | 1:18.31 |
| 2 | 12 | Oliver OSBORNE | 14 | Derventio | 1:14.10 |
| 3 | 14 | Isaac CADDY | 16 | Derventio | 1:13.50 |
| 4 | 13 | James SHEVCHENKO | 16 | Royal Wolv | 1:13.80 |
| 5 | 11 | Leo ALLANSON | 15 | Derventio | 1:16.70 |
| 6 | 9 | Manav MISTRY | 14 | Northampton | 1:20.70 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 16 | Jacob HAMBLEN | 16 | Derventio | 1:11.30 |
| 2 | 18 | George WHITTLE | 15 | Derventio | 1:09.80 |
| 3 | 20 | Ethan ELLIS-SIXSMITH | 18 | Royal Wolv | 1:07.68 |
| 4 | 19 | Jean-Luc LOVELL-PASCAL | 16 | Royal Wolv | 1:09.07 |
| 5 | 17 | Andrew JONES | 17 | Royal Wolv | 1:10.35 |
| 6 | 15 | Lewis HICKMAN | 14 | Royal Wolv | 1:12.50 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 22 | Samuel BROOKES | 17 | Derventio | 1:05.00 |
| 2 | 24 | Max WASS | 18 | Newcastle St | 1:04.20 |
| 3 | 26 | Harvey FREEMAN | 17 | Northampton | 1:01.20 |
| 4 | 25 | Joshua PEMBERTON | 21 | Derventio | 1:02.14 |
| 5 | 23 | Samuel SMITH | 16 | Northampton | 1:04.90 |
| 6 | 21 | Joe STRATTON | 17 | Royal Wolv | 1:07.30 |