EVENT 325 Open/Male 16 Yrs/Over 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Jamie Mason | 17 | Corby | |
| 3 | 4 | Aaron Mountford | 16 | Wellingboro | |
| 4 | 6 | Curtis Minney | 21 | Kettering | |
| 5 | 5 | Riley Woodward | 17 | Northampton | |
| 6 | 3 | Matthew Kemp | 16 | Wellingboro | |
| 7 | 1 | George Brotherston | 16 | Wellingboro | |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Edward Oscroft | 17 | Northampton | |
| 2 | 10 | Aryan Nath | 17 | Corby | |
| 3 | 12 | Jack Hurry | 17 | Northampton | |
| 4 | 14 | Samuel Cooke | 20 | Corby | |
| 5 | 13 | Jack Bignell | 18 | Northampton | |
| 6 | 11 | Edun Rowe | 18 | Northampton | |
| 7 | 9 | Oliver Dovey | 16 | Corby | |
| 8 | 7 | David Bielawski | 17 | Northampton | |