EVENT 101 Boys Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 2 | Alexander LEE | 11 | Co Sheffield | 6:51.10 |
| 1 | 4 | James ADKIN | 11 | Co Leeds | 6:45.00 |
| 2 | 6 | Arthur FIRTH | 10 | Co Leeds | 6:40.00 |
| 3 | 8 | Aidan HARRIS | 15 | Wetherby | 6:17.37 |
| 4 | 10 | Clark HOPKINSON | 11 | Co Birm'ham | 6:09.50 |
| 5 | 9 | Harry SENIOR | 11 | Co Leeds | 6:10.00 |
| 6 | 7 | Jamie BROADHURST | 12 | Co Leeds | 6:37.50 |
| 7 | 5 | Nathan DULAY | 12 | Co Leeds | 6:43.20 |
| 8 | 3 | William MILLICHAMP | 11 | Kingsbury | 6:49.90 |
| 9 | 1 | Ewan PEARCE | 9 | Nuneaton | 7:23.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 12 | Kourosh KHODAKHAH | 11 | Co Leeds | 6:02.80 |
| 1 | 14 | Jad IDRIS | 12 | Co Leeds | 5:55.30 |
| 2 | 16 | William LUKE | 13 | Nuneaton | 5:53.60 |
| 3 | 18 | Corey SMITH | 12 | Co Birm'ham | 5:45.76 |
| 4 | 20 | Elliott WATKINS | 13 | Co Leeds | 5:35.40 |
| 5 | 19 | Ben STEWART | 14 | Nuneaton | 5:41.30 |
| 6 | 17 | James ABULENCIA | 12 | Co Birm'ham | 5:51.96 |
| 7 | 15 | James ROSS | 13 | Co Manch Aq | 5:55.00 |
| 8 | 13 | Benjamin ZHOU | 11 | Co Manch Aq | 6:00.00 |
| 9 | 11 | Dariush KHODAKHAH | 12 | Co Leeds | 6:05.50 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 22 | Ryan COULTHARD | 14 | Co Manch Aq | 5:30.72 |
| 1 | 24 | Thomas VINCE | 14 | Nuneaton | 5:29.80 |
| 2 | 26 | Luis DIMELOW | 14 | Co Sheffield | 5:26.20 |
| 3 | 28 | Christopher WALKER | 14 | Co Manch Aq | 5:17.50 |
| 4 | 30 | Matthew YEOMANS | 16 | Co Leeds | 4:48.61 |
| 5 | 29 | Samual NICHOLLS | 13 | Chesterfield | 5:16.43 |
| 6 | 27 | Jack LYNCH | 13 | Nuneaton | 5:25.00 |
| 7 | 25 | Cameron JEFFREY | 14 | Co Manch Aq | 5:27.80 |
| 8 | 23 | Curtis HARPER | 13 | Co Sheffield | 5:30.00 |
| 9 | 21 | James FROGGATT | 12 | Co Birm'ham | 5:34.82 |