EVENT 701 Mens 11 Yrs/Over 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 2 | Patch Robinson | 12 | teamipswich | 10:31.80 |
| 3 | 4 | Kian Quinlan | 13 | Bo Southend | 10:11.52 |
| 4 | 6 | William Ellard | 13 | St Felix Sch | 10:06.30 |
| 5 | 5 | Louis James | 13 | Thetford | 10:11.00 |
| 6 | 3 | Daniel Kendall | 13 | Co Ely | 10:14.20 |
| 7 | 1 | Jack Despy | 11 | Basildon Ph | 10:39.42 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 8 | Joel Pietersen | 12 | Hatfield | 10:02.04 |
| 2 | 10 | Nathanial Mapley | 13 | Co St Albans | 9:58.46 |
| 3 | 12 | Harrison Bristow | 14 | Modernian | 9:51.40 |
| 4 | 14 | Finn Cooper | 13 | teamipswich | 9:49.50 |
| 5 | 13 | Noah Crabb | 14 | teamipswich | 9:50.10 |
| 6 | 11 | Ryan Wall | 12 | Royston | 9:58.44 |
| 7 | 9 | Zak Troman | 12 | Colchester | 10:00.40 |
| 8 | 7 | Safford Hewitt-White | 13 | Co Peterboro | 10:05.48 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 16 | Matthew Monie | 14 | Co Cambridge | 9:46.17 |
| 2 | 18 | Daniel Clayton | 13 | teamipswich | 9:43.30 |
| 3 | 20 | Daniel McGuinness | 13 | Basildon Ph | 9:39.90 |
| 4 | 22 | Nikita Charykin | 13 | Thurrock | 9:36.39 |
| 5 | 21 | Matthew Brown | 14 | Stowmarket | 9:38.80 |
| 6 | 19 | Christopher Williamson | 14 | Co Cambridge | 9:40.75 |
| 7 | 17 | Harry Sharpe | 14 | West Norfolk | 9:45.90 |
| 8 | 15 | Mark Milburn | 14 | Colchester | 9:49.40 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 24 | Jacob Kitching | 14 | Chelmsford | 9:32.60 |
| 2 | 26 | Aidan Pilcher | 14 | teamipswich | 9:29.80 |
| 3 | 28 | Robert Addis | 15 | West Norfolk | 9:24.30 |
| 4 | 30 | Oskar Farkas | 14 | Co Cambridge | 9:18.79 |
| 5 | 29 | Ahaan Saini | 15 | Hatfield | 9:20.03 |
| 6 | 27 | Keelan Gosney | 15 | Chelmsford | 9:29.60 |
| 7 | 25 | Connor Houston | 15 | Deben | 9:30.50 |
| 8 | 23 | Denis Morine | 14 | Basildon Ph | 9:35.05 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 32 | Daniel Monk | 15 | Harlow Pen | 9:17.20 |
| 2 | 34 | Luke Barton | 15 | Co Norwich | 9:11.90 |
| 3 | 36 | Peter Soczewka | 14 | Hatfield | 9:10.49 |
| 4 | 38 | Fabian Brudnicki | 15 | Co Peterboro | 9:09.58 |
| 5 | 37 | Samuel Rose | 16 | West Norfolk | 9:10.30 |
| 6 | 35 | Jude Hills | 14 | Thurrock | 9:11.00 |
| 7 | 33 | Harrison Jarvis | 15 | Thurrock | 9:12.76 |
| 8 | 31 | Olivier Vedrenne | 14 | Co Norwich | 9:18.30 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 40 | Rhys Davidson | 15 | Team Luton | 9:02.20 |
| 2 | 42 | George Whiteman | 15 | Co Peterboro | 8:54.88 |
| 3 | 44 | Daniel English | 17 | Hitchin | 8:49.17 |
| 4 | 46 | Noah Jameson Neal | 15 | Basildon Ph | 8:42.40 |
| 5 | 45 | Nathan Woodrow | 16 | Co Norwich | 8:44.60 |
| 6 | 43 | Joe Cooper | 15 | teamipswich | 8:51.10 |
| 7 | 41 | Thomas Cadenhead | 17 | Co St Albans | 8:59.70 |
| 8 | 39 | Callum Stedman | 16 | West Norfolk | 9:07.80 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 48 | Joshua Fowles | 20 | Witham Dolph | 8:31.50 |
| 2 | 50 | Myles Turner | 19 | Co Cambridge | 8:29.00 |
| 3 | 52 | Jamie McCaffray | 18 | Modernian | 8:20.50 |
| 4 | 54 | Matthew Wright | 21 | Team Luton | 8:11.53 |
| 5 | 53 | Myles Robinson-Young | 17 | Co Peterboro | 8:11.70 |
| 6 | 51 | Henry Pearce | 17 | Co Peterboro | 8:20.70 |
| 7 | 49 | Lewis Binning | 16 | Basildon Ph | 8:29.40 |
| 8 | 47 | Jude Liddiard | 18 | Co St Albans | 8:37.10 |