EVENT 117 Open/Male 16/17 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Lewis Hickman | 16 | Staffs | 1:03.11 |
| 2 | 3 | Elliot Stoddard | 16 | Cornwall | 1:01.65 |
| 3 | 5 | Freddie Carter | 17 | Wiltshire | 1:00.44 |
| 4 | 7 | Oliver Pike | 16 | Norfolk | 59.98 |
| 5 | 6 | Thomas Bruce | 17 | Lincolnshire | 1:00.15 |
| 6 | 4 | Lewis Bebb | 16 | Shropshire | 1:01.52 |
| 7 | 2 | Ethan Allpress | 17 | Cumbria | 1:01.75 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Harrison Shaw | 16 | Bedfordshire | 59.16 |
| 1 | 11 | Davey Unwin | 17 | Cheshire | 58.27 |
| 2 | 13 | George Moore | 17 | Leics | 57.79 |
| 3 | 15 | Tristyn James | 17 | SW Wales | 56.31 |
| 4 | 17 | Kieran Lennox | 17 | Scot North | 55.83 |
| 5 | 16 | Jack Brown | 16 | Gloucs | 55.96 |
| 6 | 14 | Charlie Toms | 17 | Ox & N Bucks | 57.09 |
| 7 | 12 | Maximus Leigh | 17 | Dorset | 58.13 |
| 8 | 10 | Samuel Cooke | 17 | Northants | 58.28 |
| 9 | 8 | Riley Hall | 16 | Cambs | 59.48 |