EVENT 204 Boys Open 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 4 | Arlo Crossfield | 11 | Buxton | 7:49.13 |
| 2 | 3 | Edward Aldred | 11 | Buxton | 7:50.28 |
| 3 | 2 | Eric Drabble | 10 | Buxton | 8:05.75 |
| 4 | 5 | Ged Faulkner | 11 | Buxton | 7:46.86 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Cody Bassett | 11 | Buxton | 6:41.67 |
| 5 | 6 | James Garner | 11 | Buxton | 6:51.46 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 1 | Ash Dawson | 45 | Buxton | : . |
| 2 | 12 | Joseph Winterbottom | 33 | Buxton | : . |
| 3 | 10 | Oliver Bore | 12 | BelperMarlin | : . |
| 4 | 11 | Ryan Cornish | 16 | Buxton | : . |
| 5 | 9 | Daniel Margiotta | 12 | Ashbourne | : . |
| 6 | 7 | Owen Richards-Jones | 11 | Ashbourne | : . |