Heats (Declared Winners) Boys 12 Years 400m Freestyle
| Place | Name | AaD | Club | Time | | |
| 1. | Ben Kerry | 12 | Bolton & Manchester | 4:34.46 | | |
| 2. | Connor Makin | 12 | Bolton & Manchester | 4:39.10 | | |
| 3. | Oliver Simpson | 12 | North Mids | 4:43.63 | | |
| 4. | Ben Cleaveley | 12 | North Mids | 4:46.02 | | |
| 5. | Ethan Williams | 12 | LiverplDASA | 4:58.02 | | |
| 6. | Kieran Atkinson | 12 | North Lancs | 4:59.99 | | |
| 7. | Scott Bailey | 12 | Cumbria ASA | 5:01.62 | | |
| 8. | Adam Ravenscroft | 12 | LiverplDASA | 5:02.22 | | |
| 9. | Sam Timpany | 12 | North Lancs | 5:06.21 | | |
| 10. | Samuel Routledge | 12 | Cumbria ASA | 5:09.14 | | |
| 11. | Saul Moorcroft | 12 | Cent Lancs | 5:23.31 | | |
| 12. | Josh Ivell | 12 | Cent Lancs | 5:50.60 | | |