EVENT 101 Open/Male 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 2 | Ryker BOYD | 11 | Co Leeds | 6:55.10 |
| 1 | 4 | Dexter ROWLANDS | 11 | Co Leeds | 6:42.50 |
| 2 | 6 | Liam COHEN | 11 | Camden Swiss | 6:19.90 |
| 3 | 8 | Jacob CAWOOD | 11 | Co Leeds | 6:07.03 |
| 4 | 10 | Joshua COHEN | 13 | Camden Swiss | 5:58.77 |
| 5 | 9 | George RICKETTS | 12 | Co Leeds | 6:06.76 |
| 6 | 7 | Daniel RAWLINGS | 12 | Co Leeds | 6:19.24 |
| 7 | 5 | Thomas HORSMAN | 12 | Borocuda T | 6:30.00 |
| 8 | 3 | Jake HARRISON | 10 | Co Leeds | 6:48.71 |
| 9 | 1 | Noah BEDFORD COLLINS | 11 | Co Leeds | 7:15.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 12 | Tyler CARR | 14 | Chester Le S | 5:52.90 |
| 1 | 14 | Misha PROSYANKIN | 12 | Camden Swiss | 5:42.20 |
| 2 | 16 | Kaloyan NEDYALKOV | 14 | Workington | 5:23.50 |
| 3 | 18 | Joshua WHITTON | 15 | Chester Le S | 5:12.40 |
| 4 | 20 | Benjamin PALMER | 15 | Chester Le S | 4:58.90 |
| 5 | 19 | Jeffrey LANGE | 14 | Co Leeds | 5:10.70 |
| 6 | 17 | Freddie SUTTON | 15 | Copeland | 5:16.50 |
| 7 | 15 | Seth CHARLESWORTH | 14 | Co Sheffield | 5:28.10 |
| 8 | 13 | Barney HOBBS | 13 | Co Leeds | 5:49.13 |
| 9 | 11 | David GRIGORE | 12 | Co Leeds | 5:56.73 |