EVENT 102 Boys 16/17 Yrs 100m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Finley Wonnacott | 16 | Cornwall | 56.74 |
| 2 | 3 | Samuel Cooke | 16 | Northants | 55.76 |
| 3 | 5 | Fred Carter | 16 | Wiltshire | 55.10 |
| 4 | 7 | Gabriel Knight | 17 | Dorset | 54.15 |
| 5 | 6 | Louis James | 16 | Norfolk | 54.78 |
| 6 | 4 | Elwyn Davies | 17 | Shropshire | 55.51 |
| 7 | 2 | James Escolme | 16 | Cumbria | 56.10 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Nathanial Mapley | 16 | SE Herts | 53.51 |
| 1 | 11 | Cameron Wrapson | 16 | Warwicks | 52.91 |
| 2 | 13 | Jack Hill | 17 | Bedfordshire | 52.67 |
| 3 | 15 | Joshua Bailye | 17 | Derbyshire | 52.60 |
| 4 | 17 | Kaiden Welsby | 17 | Cheshire | 51.26 |
| 5 | 16 | George Snow | 16 | Hampshire | 51.39 |
| 6 | 14 | Jake Acton | 17 | Sussex | 52.65 |
| 7 | 12 | Charlie Miller | 17 | Lincolnshire | 52.89 |
| 8 | 10 | Oliver Burns | 17 | Staffs | 53.49 |
| 9 | 8 | Oliver Dade | 17 | Gloucs | 53.52 |