EVENT 411 Boy Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Louis DUBBELDAM | 16 | Durham City | 5:13.72 |
| 3 | 4 | Leo TAYLOR | 16 | Leyland Barr | 5:12.40 |
| 4 | 6 | Jasper JONES | 15 | Northampton | 5:10.73 |
| 5 | 5 | Oscar GOLDSMITH | 14 | South Lincs | 5:10.90 |
| 6 | 3 | William HICKLIN | 13 | Co Leeds | 5:13.52 |
| 7 | 1 | Matthew JUST | 14 | Co Leeds | 5:14.40 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 9 | Daniel MENZER | 19 | Bo Barnsley | 5:07.57 |
| 1 | 13 | Benjamin ROGERS | 17 | RichmondDale | 5:03.20 |
| 2 | 17 | Cameron RHODES | 17 | Rotherham Mo | 5:02.10 |
| 3 | 23 | Razvan GRUMAZESCU | 18 | Northampton | 4:54.63 |
| 4 | 27 | Luke CLEGG | 17 | Bo Kirklees | 4:43.00 |
| 5 | 25 | Jason HERBERT | 17 | Leamington | 4:53.30 |
| 6 | 20 | Luke STEVENS | 16 | Leic Sharks | 4:56.20 |
| 7 | 15 | Matthew WARBURTON | 17 | Warrington W | 5:03.00 |
| 8 | 11 | Henry FIRTH | 17 | Co Leeds | 5:04.25 |
| 9 | 7 | Dylan FUNG | 15 | Stockport Mo | 5:09.80 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 0 | 10 | George BROOKS | 15 | Co Leeds | 5:07.08 |
| 1 | 14 | Jad IDRIS | 16 | Co Leeds | 5:03.05 |
| 2 | 19 | Finlay POPE | 15 | Stockport Mo | 4:56.40 |
| 3 | 24 | Daniel JENKINS | 18 | Boldmere | 4:54.10 |
| 4 | 28 | Rico BRINGEMAN | 17 | South Lincs | 4:36.80 |
| 5 | 26 | Ben GILCHRIST | 21 | RichmondDale | 4:43.70 |
| 6 | 22 | Daniel JACKSON | 16 | Bo Kirklees | 4:55.24 |
| 7 | 16 | Charlie ROUNCE | 15 | Leamington | 5:02.40 |
| 8 | 12 | Alfie BISBY | 15 | South Lincs | 5:03.60 |
| 9 | 8 | Daniel BEATTIE | 16 | Stockport Mo | 5:08.30 |