EVENT 426 Mens 400m IM - Heats
Not Competing : 16,20
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | Mark MILBURN | 12 | Colchester | 6:01.41 |
| 4 | 3 | Matthew MONIE | 12 | Co Cambridge | 5:55.40 |
| 5 | 2 | Harry SHARPE | 12 | West Norfolk | 6:00.33 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 5 | Enzo LIM | 12 | Watford SC | 5:52.28 |
| 3 | 7 | George WHITEMAN | 13 | Co Peterboro | 5:43.70 |
| 4 | 9 | Denis MORINE | 12 | Chelmsford | 5:43.00 |
| 5 | 8 | Tyler JACKSON | 13 | Harlow Pen | 5:43.30 |
| 6 | 6 | Alexander WILLIAMS | 12 | Watford SC | 5:49.38 |
| 7 | 4 | Christopher WILLIAMSON | 12 | Co Cambridge | 5:54.05 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 11 | Peter SOCZEWKA | 12 | Hatfield | 5:40.33 |
| 2 | 13 | Jimmy TAYLOR | 13 | Thurrock | 5:40.21 |
| 3 | 15 | Tom MALIA | 13 | Flitwick | 5:39.85 |
| 4 | 18 | Taylor COE | 13 | Cheshunt | 5:38.35 |
| 5 | 17 | Tyler WATSON | 13 | Flitwick | 5:39.13 |
| 6 | 14 | Robert ADDIS | 13 | West Norfolk | 5:40.06 |
| 7 | 12 | Jenson HURRELL | 12 | Thurrock | 5:40.21 |
| 8 | 10 | Connor HOUSTON | 13 | Deben | 5:42.38 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 21 | Connor WALKER | 13 | Co Peterboro | 5:34.36 |
| 2 | 23 | Edward MCFARLAND | 14 | C Beds SS | 5:28.90 |
| 3 | 25 | Joshua THURSTON-WOOLNO | 14 | Beccles Town | 5:27.58 |
| 4 | 27 | Mattias MORSE | 14 | Hemel Hemp | 5:27.33 |
| 5 | 26 | Jude HILLS | 12 | Bo Southend | 5:27.50 |
| 6 | 24 | Samuel BULLINGHAM | 14 | West Suffolk | 5:28.87 |
| 7 | 22 | Ryan DAVIS | 13 | Epping For't | 5:32.00 |
| 8 | 19 | James ROTHWELL | 13 | Co Peterboro | 5:36.57 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 29 | Mide OLAJIDE | 13 | Thurrock | 5:24.63 |
| 2 | 31 | William TOZER | 14 | West Suffolk | 5:22.90 |
| 3 | 33 | Euan DONALD | 14 | Berkhamsted | 5:21.86 |
| 4 | 35 | Henry FERRIES | 14 | Basildon Ph | 5:19.40 |
| 5 | 34 | James SPEERS | 14 | Basildon Ph | 5:20.80 |
| 6 | 32 | Harrison JARVIS | 13 | Thurrock | 5:22.10 |
| 7 | 30 | Luke BARTON | 13 | Lstoft & OB | 5:24.20 |
| 8 | 28 | Matthew NEWSON | 14 | Co Peterboro | 5:25.06 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 37 | Freddie LAWS | 14 | West Norfolk | 5:16.68 |
| 2 | 39 | Rhys DAVIDSON | 13 | Team Luton | 5:14.10 |
| 3 | 41 | Michael KLIMASZEWSKI | 13 | Hatfield | 5:12.38 |
| 4 | 43 | Devesh KAPOOR | 14 | Watford SC | 5:10.91 |
| 5 | 42 | Matthew DEBENHAM | 13 | teamipswich | 5:11.16 |
| 6 | 40 | Nathan WOODROW | 14 | UEA Norwich | 5:13.70 |
| 7 | 38 | Callum STEDMAN | 14 | Dereham | 5:16.67 |
| 8 | 36 | Luke PESTAILLE | 14 | Hatfield | 5:18.39 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 45 | Joe COOPER | 13 | teamipswich | 5:06.67 |
| 2 | 47 | Owen WEBSTER | 14 | St Felix Sch | 5:04.58 |
| 3 | 49 | William PESTELL | 14 | teamipswich | 5:04.34 |
| 4 | 51 | Ciaran RICHES | 14 | West Suffolk | 5:02.73 |
| 5 | 50 | Finn JEFFERY | 14 | St Felix Sch | 5:03.48 |
| 6 | 48 | Samuel ROSE | 14 | West Norfolk | 5:04.43 |
| 7 | 46 | Sam WILLIAMSON | 13 | Hatfield | 5:05.30 |
| 8 | 44 | Jack TURRELL | 14 | Basildon Ph | 5:10.00 |