EVENT 601 Mens Open 400m IM - Heats
Not Competing : 8,13,26
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | James MONCUR-BROWN | 15 | UEA Norwich | 5:11.09 |
| 4 | 3 | Matthew ADDIS | 17 | West Norfolk | 5:08.19 |
| 5 | 2 | Robert BRUNTON | 17 | Co Cambridge | 5:10.73 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 5 | Jonah PHILPOTT | 16 | UEA Norwich | 5:06.86 |
| 3 | 7 | Jamie MCCAFFRAY | 14 | Modernians | 5:04.40 |
| 4 | 10 | Cole JAMES | 14 | Hatfield | 4:59.90 |
| 5 | 9 | Joseph WELLS | 16 | West Norfolk | 5:01.77 |
| 6 | 6 | James HANCOCK | 17 | Mid Beds | 5:05.50 |
| 7 | 4 | Levin GRAF | 15 | Co Cambridge | 5:08.09 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 12 | Charles RAYNER | 14 | Hatfield | 4:59.08 |
| 2 | 15 | Ryan KELLY | 16 | Chelmsford | 4:55.80 |
| 3 | 17 | Matthew GRAY | 15 | Co Peterboro | 4:54.62 |
| 4 | 19 | Ryan SYKES | 19 | West Norfolk | 4:53.02 |
| 5 | 18 | Myles TURNER | 15 | West Suffolk | 4:53.50 |
| 6 | 16 | Jordan NORTHWOOD | 16 | Berkhamsted | 4:55.59 |
| 7 | 14 | Oliver KENNY | 18 | UEA Norwich | 4:57.20 |
| 8 | 11 | Harry WHITEMAN | 15 | Co Peterboro | 4:59.10 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 21 | Keenan STOKES | 17 | UEA Norwich | 4:51.60 |
| 2 | 23 | Harvey NORMAN | 14 | Co Peterboro | 4:49.20 |
| 3 | 25 | Cameron MCRAE | 16 | Co Peterboro | 4:47.41 |
| 4 | 28 | Samuel PECK | 15 | UEA Norwich | 4:41.00 |
| 5 | 27 | Jack PICKERING | 17 | teamipswich | 4:44.40 |
| 6 | 24 | Lawrence LOWMAN | 26 | Beccles Town | 4:48.37 |
| 7 | 22 | Calvin COE | 17 | Stowmarket | 4:51.30 |
| 8 | 20 | Finlay RYAN | 16 | Norwich Swan | 4:53.00 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 30 | Thomas SARAH | 21 | Co Cambridge | 4:37.70 |
| 2 | 32 | Augustus VEASEY | 19 | Chelmsford | 4:33.86 |
| 3 | 34 | Thomas MCLAGAN | 19 | Chelmsford | 4:33.61 |
| 4 | 36 | Nathan HUGHES | 15 | Hatfield | 4:23.10 |
| 5 | 35 | Nathan WELLS | 17 | West Norfolk | 4:29.30 |
| 6 | 33 | Joshua GRAVES | 18 | Co Peterboro | 4:33.77 |
| 7 | 31 | Fraser SCOTT | 17 | Basildon Ph | 4:36.25 |
| 8 | 29 | Ben HARRISON | 15 | Potters Bar | 4:39.00 |