EVENT 414 Open/Male 15 /Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 2 | Peter Wilson | 16 | Buxton | 1:16.84 |
| 1 | 8 | Jack Bainbridge | 16 | Chesterfield | 1:10.25 |
| 2 | 14 | Leo Allanson | 18 | Ripley | 1:08.88 |
| 3 | 20 | Amr Abdin | 20 | Derby Excel | 1:04.77 |
| 4 | 26 | Ezra Lambert | 18 | Derby Excel | 1:00.69 |
| 5 | 23 | Oliver Stone | 16 | Ripley | 1:02.80 |
| 6 | 17 | Matthew Foreman | 18 | Buxton | 1:07.84 |
| 7 | 11 | Jack Harris | 15 | Derby Excel | 1:10.47 |
| 8 | 5 | Calin Tomozei | 15 | Chesterfield | 1:17.11 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 3 | Elliot Bestwick | 23 | Ilkeston | 1:21.79 |
| 1 | 9 | Torsten Ellis | 19 | DerbyPhoenix | 1:14.18 |
| 2 | 15 | Matthew Wilson | 19 | Dronfield | DN:C . |
| 3 | 21 | Christopher Oliver | 17 | Long Eaton | 1:06.22 |
| 4 | 27 | Sebastian Ebanks | 17 | Derby Excel | DN:C . |
| 5 | 24 | Luke Waterfall | 19 | Ripley | 1:01.77 |
| 6 | 18 | Harry Maskrey | 17 | BelperMarlin | 1:06.97 |
| 7 | 12 | Danny Barron | 16 | Etwall | 1:07.56 |
| 8 | 6 | Sergei Kulev | 17 | Rykneld | 1:13.98 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 4 | Benjamin Cami | 16 | Long Eaton | 1:18.97 |
| 1 | 10 | Jai Dhillon | 16 | DerbyPhoenix | DN:C . |
| 2 | 16 | Henry Jones | 15 | Dronfield | 1:06.57 |
| 3 | 22 | James Ralph | 17 | Buxton | 1:04.46 |
| 4 | 28 | Harry Milne | 16 | Repton | 1:00.43 |
| 5 | 25 | Noah Van Hoorebeek | 17 | Chesterfield | 1:01.77 |
| 6 | 19 | Oliver Gillott | 18 | Dronfield | 1:06.08 |
| 7 | 13 | Lucas Kimber | 15 | Derby Excel | 1:10.49 |
| 8 | 7 | Evan Johnson | 15 | BelperMarlin | 1:09.41 |
| 9 | 1 | Rory McKeown | 15 | Ilkeston | 1:22.85 |