EVENT 121 Open/Male 14/15 100m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | John Toogood | 15 | Shropshire | 59.14 |
| 2 | 3 | Finlay Neve | 15 | Norfolk | 57.73 |
| 3 | 5 | Fenn Sellick | 15 | SW Wales | 56.99 |
| 4 | 7 | Max Henderson | 15 | Cumbria | 56.03 |
| 5 | 6 | Finley Mooney | 15 | Gloucs | 56.40 |
| 6 | 4 | Josh Scrivener | 14 | Ox & N Bucks | 57.43 |
| 7 | 2 | Thomas Blacklaws | 15 | Leics | 58.58 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Oscar Bellinger | 15 | Wiltshire | 55.93 |
| 1 | 11 | Ewen Slater | 15 | Staffs | 55.05 |
| 2 | 13 | Simon Harrison | 15 | Cheshire | 54.79 |
| 3 | 15 | M Vasconcellos-Blanch | 15 | Northants | 54.61 |
| 4 | 17 | Hugo Young | 15 | Dorset | 54.08 |
| 5 | 16 | Ewan Cox | 15 | Lincolnshire | 54.52 |
| 6 | 14 | Ollie O'Connor | 15 | Bedfordshire | 54.66 |
| 7 | 12 | Cameron Hastings | 15 | Scot North | 54.81 |
| 8 | 10 | Thomas Belt | 15 | Cornwall | 55.34 |
| 9 | 8 | Jack Swindale | 15 | Cambs | 55.96 |