EVENT 232 Men 15 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | William Buckley | 15 | Watford SC | 5:20.91 |
| 4 | 3 | Jamie Joshua | 15 | Hatfield | 5:17.35 |
| 5 | 2 | Oliver Blight | 15 | Hatfield | 5:20.43 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Christopher Howe | 16 | Co Cambridge | 5:14.53 |
| 3 | 7 | Daniel McGuinness | 15 | Basildon Ph | 5:10.50 |
| 4 | 9 | Daniel Ord | 16 | Watford SC | 5:09.11 |
| 5 | 8 | Jack Barnard | 16 | Potters Bar | 5:09.31 |
| 6 | 6 | Daniel Clayton | 15 | teamipswich | 5:10.85 |
| 7 | 4 | Daniel Kendall | 15 | Co Ely | 5:14.99 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 11 | Matthew Brown | 16 | Stowmarket | 4:58.81 |
| 2 | 13 | Nikita Charykin | 15 | Thurrock | 4:54.50 |
| 3 | 15 | Olivier Vedrenne | 16 | Co Norwich | 4:52.00 |
| 4 | 17 | William Tozer | 18 | West Suffolk | 4:51.64 |
| 5 | 16 | Joseph Wells | 22 | West Norfolk | 4:51.80 |
| 6 | 14 | Mark Milburn | 16 | Colchester | 4:52.10 |
| 7 | 12 | Zack Treharne | 17 | Co Peterboro | 4:55.23 |
| 8 | 10 | Matthew Monie | 16 | Co Cambridge | 5:07.12 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 19 | William Loveman | 21 | Co St Albans | 4:47.20 |
| 2 | 21 | Jack Turrell | 18 | Basildon Ph | 4:44.87 |
| 3 | 23 | Joe Cooper | 17 | teamipswich | 4:41.27 |
| 4 | 25 | Nathan Wells | 23 | West Norfolk | 4:19.06 |
| 5 | 24 | Myles Turner | 21 | West Suffolk | 4:27.07 |
| 6 | 22 | Freddie Laws | 18 | West Norfolk | 4:44.10 |
| 7 | 20 | Jack Sangster | 20 | Modernian | 4:45.30 |
| 8 | 18 | George Whiteman | 17 | Co Peterboro | 4:47.32 |