EVENT 102 Boys 16/17 Yrs 100m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 2 | Jack Ryan | 00 | Bedfordshire | 56.32 |
| 2 | 4 | Angus Jarvis | 99 | Cornwall | 55.75 |
| 3 | 6 | Thomas Hoven | 99 | Norfolk | 54.10 |
| 4 | 8 | Lewis Hodgetts | 99 | Staffs | 53.99 |
| 5 | 7 | Harvey Thompson | 99 | Worcs | 54.07 |
| 6 | 5 | Joshua Lloyd | 99 | Northants | 55.72 |
| 7 | 3 | Sidney Fenwick | 00 | Wiltshire | 56.26 |
| 8 | 1 | Jack Corston | 99 | Shropshire | 57.44 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 10 | Connor Joyce | 00 | Cumbria | 53.68 |
| 2 | 12 | Daniel Leigh | 99 | Cambs | 52.59 |
| 3 | 14 | Jacob Peters | 00 | Dorset | 52.30 |
| 4 | 16 | Benjamin Stanford | 99 | Warwicks | 50.69 |
| 5 | 15 | Harry Stacey | 00 | Sussex | 52.30 |
| 6 | 13 | Thomas Balfour | 00 | Scot West | 52.35 |
| 7 | 11 | Oliver Palmer | 99 | Devon | 53.50 |
| 8 | 9 | William Swain | 00 | Lincolnshire | 53.90 |