EVENT 106 Open/Male 14/15 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Alfie Lewis-Coxill | 15 | Shropshire | 1:07.80 |
| 2 | 3 | Oscar Hodgson | 14 | Cumbria | 1:05.61 |
| 3 | 5 | Miles Willetts | 14 | Leics | 1:03.66 |
| 4 | 7 | Oscar Devaal | 14 | Staffs | 1:01.74 |
| 5 | 6 | Josh Scrivener | 14 | Ox & N Bucks | 1:02.26 |
| 6 | 4 | Oscar Hunter | 14 | Norfolk | 1:04.06 |
| 7 | 2 | Dexter West | 14 | SW Wales | 1:06.16 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Timothy Jones | 15 | Cornwall | 1:01.20 |
| 1 | 11 | Ryan Close | 15 | Bedfordshire | 59.52 |
| 2 | 13 | Oscar Bellinger | 15 | Wiltshire | 59.22 |
| 3 | 15 | M Vasconcellos-Blanch | 15 | Northants | 58.94 |
| 4 | 17 | Dean Fearn | 15 | Scot North | 55.18 |
| 5 | 16 | Ewan Cox | 15 | Lincolnshire | 58.61 |
| 6 | 14 | Rufus Bennett | 15 | Cambs | 59.02 |
| 7 | 12 | Berdan Ordek | 15 | Cheshire | 59.31 |
| 8 | 10 | Henry Dean | 15 | Dorset | 1:00.11 |
| 9 | 8 | Harrison Galloway | 15 | Gloucs | 1:01.52 |