EVENT 301 Open/Male 11 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Freddie Morgan | 11 | Repton | 6:46.20 |
| 2 | 4 | Addison Willis | 12 | Repton | 6:30.91 |
| 3 | 8 | Billy Donlan | 13 | Warrington W | 6:10.00 |
| 4 | 12 | Alfred Whitell | 12 | Co Manch Aq | 5:57.60 |
| 5 | 9 | Jacob Ramsay | 11 | Repton | 6:03.54 |
| 6 | 6 | James Hilton | 14 | Aquabears | 6:15.00 |
| 7 | 3 | George Howard | 11 | Repton | 6:35.40 |
| 8 | 1 | Malek Ali | 13 | Flixton | 7:23.10 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 14 | Oliver Abson | 14 | Wigan BEST | 5:54.10 |
| 2 | 16 | Heath Mason | 13 | Bolton Metro | 5:49.90 |
| 3 | 18 | Emmett Eastwood | 13 | Aquabears | 5:43.78 |
| 4 | 20 | Tommy Duff | 13 | Repton | 5:33.30 |
| 5 | 19 | Joseph Cox | 13 | Repton | 5:34.40 |
| 6 | 17 | Mizar Chung | 14 | Flixton | 5:45.00 |
| 7 | 15 | Harry Prothero | 12 | Co Liverpool | 5:53.66 |
| 8 | 13 | Lev Shcherba | 11 | Repton | 5:55.88 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 23 | Jacob Wilson | 13 | Workington | 5:25.70 |
| 2 | 25 | Samuel Lutas | 14 | Co Liverpool | 5:20.61 |
| 3 | 27 | Joe Chadwick | 15 | Aquabears | 5:16.70 |
| 4 | 29 | Micah-Noel Schrank | 17 | Co Manch Aq | 4:59.20 |
| 5 | 28 | Arlo Hems Gillson | 15 | Repton | 5:11.20 |
| 6 | 26 | Finley Burke | 13 | Bolton Metro | 5:19.31 |
| 7 | 24 | Alex Murray | 13 | Warrington W | 5:24.20 |
| 8 | 21 | Sky Hei Lam So | 16 | Co Manch Aq | 5:26.94 |