EVENT 121 Boys 14/15 Yrs 100m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Charlie Haynes | 15 | Cornwall | 57.35 |
| 1 | 3 | Thomas Millburn | 14 | Cumbria | 57.08 |
| 2 | 5 | Aiden Lloyd | 15 | Northants | 56.83 |
| 3 | 7 | Jacob Darby | 15 | Worcs | 56.14 |
| 4 | 9 | Nikita Ivanov | 15 | Devon | 55.96 |
| 5 | 8 | Boris Ledovskih | 15 | Cambs | 56.03 |
| 6 | 6 | Oliver Goodhew | 15 | Sussex | 56.30 |
| 7 | 4 | Harry Bumfrey | 14 | Lincolnshire | 57.05 |
| 8 | 2 | Jordan Edwards | 15 | Wiltshire | 57.11 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 11 | Elliot Hughes | 15 | Shropshire | 55.47 |
| 1 | 13 | Isaac Kirby | 14 | Norfolk | 55.41 |
| 2 | 15 | Jonah Lewis | 15 | Swim Wales W | 54.70 |
| 3 | 17 | Ed Walsh | 15 | Gloucs | 54.60 |
| 4 | 19 | Louis Seller | 15 | Suffolk | 53.90 |
| 5 | 18 | Alexander Griffiths | 15 | Swim Wales E | 54.37 |
| 6 | 16 | Stephen Gibb | 14 | Scot Midland | 54.70 |
| 7 | 14 | Steven Wilson | 15 | Warwicks | 55.15 |
| 8 | 12 | Brandon Nabarro | 15 | Bedfordshire | 55.44 |
| 9 | 10 | Harry Hathaway | 15 | Leics | 55.63 |