EVENT 805 Boy 11/12 Yrs 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Vincent Navarro | 11 | Co Sheffield | 1:42.10 |
| 3 | 2 | Reggie Spence | 11 | Co Leeds | 1:41.20 |
| 4 | 3 | Patrick O'Hara | 11 | Co Leeds | 1:41.00 |
| 5 | 4 | Jackson Clarke | 11 | Co Leeds | 1:34.00 |
| 6 | 5 | Oliver Keens | 11 | Rotherham Mo | 1:32.60 |
| 7 | 6 | James Baldwin | 11 | Bev Barracud | 1:30.90 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 7 | Zach Piercy | 11 | Co Leeds | 1:30.40 |
| 1 | 8 | George Tartakovski | 11 | Co Sheffield | 1:30.10 |
| 2 | 9 | Oscar Gavelle | 12 | Rotherham Mo | 1:29.30 |
| 3 | 10 | Harry Netherway | 12 | Tadcaster | 1:29.20 |
| 4 | 11 | Samuel Hill | 12 | Co Leeds | 1:28.90 |
| 5 | 12 | Thomas Staniforth | 11 | Donc Dartes | 1:28.40 |
| 6 | 13 | Gethin Sinclair | 12 | Co Sheffield | 1:27.80 |
| 7 | 14 | Stanley Dunne | 11 | Skipton | 1:26.80 |
| 8 | 15 | William Wilson | 11 | Co Leeds | 1:26.40 |
| 9 | 16 | Jacob O'Donnell | 11 | Co Leeds | 1:26.30 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 17 | Joshua Kelly | 12 | KingstonHull | 1:25.90 |
| 1 | 18 | Alexander Tew | 12 | Team Jorvik | 1:25.80 |
| 2 | 19 | Mateo Marinov | 12 | Stocksbridge | 1:25.50 |
| 3 | 20 | Eben Cousin | 12 | Bo Kirklees | 1:24.30 |
| 4 | 21 | Ethan Cowell | 12 | Co Leeds | 1:23.40 |
| 5 | 22 | Sam Race | 12 | King'f Scar | 1:22.30 |
| 6 | 23 | Alfie Charlton | 12 | Harrogate | 1:21.90 |
| 7 | 24 | Ruben Anderson | 12 | Co Sheffield | 1:20.90 |
| 8 | 25 | Asher Maxfield | 12 | Co Leeds | 1:20.80 |
| 9 | 26 | Oliver Tootle | 12 | Bridlington | 1:20.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 28 | Owen Carmody | 11 | Co Leeds | 1:19.30 |
| 1 | 30 | Jenson Owen | 12 | Donc Dartes | 1:18.30 |
| 2 | 32 | Freddy Dean | 12 | Co Bradford | 1:17.10 |
| 3 | 34 | Joseph Hall | 12 | Co Leeds | 1:13.90 |
| 4 | 36 | William Hicklin | 12 | Co Leeds | 1:11.10 |
| 5 | 35 | Thomas Wooffindin | 12 | Co Wakefield | 1:13.50 |
| 6 | 33 | Andrew Hunter | 12 | Cleethorpes | 1:15.30 |
| 7 | 31 | William Dale-Wood | 12 | Thirsk WH | 1:17.80 |
| 8 | 29 | Jacob Haslingden | 12 | Co Sheffield | 1:18.90 |
| 9 | 27 | Luke Wise | 12 | Tadcaster | 1:19.80 |