EVENT 207 Mens Open 400m Freestyle - Heats
Not Competing : 15,18
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | Robert BRUNTON | 15 | Co Cambridge | 4:30.85 |
| 4 | 3 | Cavan BECK | 15 | Bo Southend | 4:29.71 |
| 5 | 2 | Christian MCMILLAN | 15 | Rochford | 4:29.78 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 4 | Zack CAMPBELL-MAUGHAN | 15 | West Norfolk | 4:28.90 |
| 2 | 6 | Alexander COLE | 15 | Colchester | 4:28.33 |
| 3 | 8 | Calvin COE | 16 | Stowmarket | 4:27.88 |
| 4 | 10 | Archie HOLMAN | 15 | West Norfolk | 4:26.67 |
| 5 | 9 | Nicholas LAMBARTH | 15 | St Felix Sch | 4:26.67 |
| 6 | 7 | Joshua FOWLES | 15 | Witham Dolph | 4:28.18 |
| 7 | 5 | Oliver KENNY | 16 | UEA Norwich | 4:28.86 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 12 | Michael JUDD | 15 | Leighton Buz | 4:26.16 |
| 2 | 14 | Kieran RAPHY | 16 | Bishop Stort | 4:25.30 |
| 3 | 17 | Ryan KELLY | 15 | Chelmsford | 4:25.07 |
| 4 | 20 | Jack PICKERING | 15 | teamipswich | 4:23.79 |
| 5 | 19 | Matthew ADDIS | 16 | West Norfolk | 4:24.08 |
| 6 | 16 | Elliot WYLIE | 15 | Co St Albans | 4:25.10 |
| 7 | 13 | Daniel SCHINDLER | 15 | Co St Albans | 4:25.48 |
| 8 | 11 | Morgan READ | 15 | Dereham | 4:26.57 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 22 | Daniel LEIGH | 15 | Co Peterboro | 4:22.70 |
| 2 | 24 | Thomas BUCKLE | 16 | West Suffolk | 4:21.86 |
| 3 | 26 | Alex EVENS | 15 | Hitchin | 4:21.49 |
| 4 | 28 | Nathan TWEEDIE | 18 | Co Peterboro | 4:20.71 |
| 5 | 27 | Jamie FOWLER | 16 | Team Luton | 4:20.81 |
| 6 | 25 | Matthew WRIGHT | 16 | Team Luton | 4:21.73 |
| 7 | 23 | Ryan SYKES | 18 | West Norfolk | 4:22.07 |
| 8 | 21 | Dalton YALLOP | 17 | UEA Norwich | 4:23.22 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 30 | Ethan FARRELL | 16 | Hatfield | 4:19.57 |
| 2 | 32 | Logan MOORE | 15 | St Felix Sch | 4:19.44 |
| 3 | 34 | Thomas SHERRIFF | 18 | Hemel Hemp | 4:18.76 |
| 4 | 36 | Harry CRISP | 20 | Norwich Swan | 4:17.27 |
| 5 | 35 | Christopher GREENHALGH | 18 | Sudbury | 4:18.64 |
| 6 | 33 | Alexander PROFFITT | 16 | West Suffolk | 4:19.30 |
| 7 | 31 | Ole MILLS | 15 | Chelmsford | 4:19.53 |
| 8 | 29 | Russell BECK | 16 | Bo Southend | 4:19.85 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 38 | Joshua GRAVES | 16 | Co Peterboro | 4:16.46 |
| 2 | 40 | Adam TAPLEY | 19 | Co Cambridge | 4:14.75 |
| 3 | 42 | Daniel POWELL | 16 | Co Peterboro | 4:11.59 |
| 4 | 44 | Nathan BENTLEY | 15 | Hatfield | 4:10.40 |
| 5 | 43 | Nathan WELLS | 16 | West Norfolk | 4:10.89 |
| 6 | 41 | James DAY | 16 | Basildon Ph | 4:12.99 |
| 7 | 39 | Alex MASON | 17 | Team Luton | 4:15.03 |
| 8 | 37 | Jozef OCHWAT | 16 | teamipswich | 4:17.17 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 46 | Jake LLOYD | 19 | Bishop Stort | 4:06.60 |
| 2 | 48 | Regan LLOYD | 17 | teamipswich | 4:02.80 |
| 3 | 50 | Louis SELLER | 17 | teamipswich | 3:57.16 |
| 4 | 52 | Caleb HUGHES | 18 | Hatfield | 3:48.80 |
| 5 | 51 | Martyn WALTON | 16 | Hatfield | 3:51.90 |
| 6 | 49 | Danny PROFFITT | 19 | West Suffolk | 3:57.16 |
| 7 | 47 | Joshua DUGGAN | 17 | Hatfield | 4:04.80 |
| 8 | 45 | Timothy SHUTTLEWORTH | 17 | Hatfield | 4:06.99 |