EVENT 501 Boys Open 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Mason TRAYNOR | 10 | Coalville | 1:36.90 |
| 4 | 3 | Harry LUCAS | 13 | Braunstone | 1:19.50 |
| 5 | 2 | Maxwell BURDETT | 11 | Leic Peng | 1:22.07 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 6 | Oliver BELCHER | 15 | Coalville | 1:15.44 |
| 2 | 13 | James WRAGG | 24 | OadbyWigston | 1:08.35 |
| 3 | 19 | Finn REED | 16 | Loughborough | 1:05.72 |
| 4 | 27 | Paul PAGE | 16 | Hinckley | 1:02.06 |
| 5 | 24 | Daniel HARRIS | 16 | Coalville | 1:03.97 |
| 6 | 16 | Jonathan SHAW | 18 | Leicester Ne | 1:06.78 |
| 7 | 9 | Matthew LONGMAN | 16 | Loughborough | 1:11.63 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 7 | Oliver ASHMAN | 13 | Braunstone | 1:13.51 |
| 2 | 14 | Tommy BLACKLAWS | 15 | Leic Sharks | 1:07.40 |
| 3 | 20 | Connor WHITE | 17 | Coalville | 1:05.09 |
| 4 | 28 | Thomas SUMNER | 18 | Hinckley | 1:01.14 |
| 5 | 25 | Joe DAYMAN | 17 | Braunstone | 1:02.74 |
| 6 | 17 | Harry FLEET | 17 | Market Har | 1:06.70 |
| 7 | 11 | Harrison BYWATER | 16 | Loughborough | 1:09.28 |
| 8 | 4 | Freddie BURDETT | 13 | Leic Peng | 1:16.68 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Albert MISIUDA | 16 | Melton M'bry | 1:11.80 |
| 2 | 15 | Ben HOBBS | 22 | Loughborough | 1:06.99 |
| 3 | 22 | Lewis FITCH | 16 | Braunstone | 1:04.50 |
| 4 | 29 | George MOORE | 17 | Hinckley | 58.90 |
| 5 | 26 | Thomas DAFT | 18 | Coalville | 1:02.47 |
| 6 | 18 | Miles WILLETTS | 14 | Melton M'bry | 1:06.27 |
| 7 | 12 | Max FLETCHER | 18 | Market Har | 1:08.79 |
| 8 | 5 | Emerson-Blu GUPWELL | 13 | Braunstone | 1:15.89 |