EVENT 506 Mens Open 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 2 | 1 | Ross Philp | 17 | Staines | 8:40.20 |
| 3 | 3 | Thomas Beamer | 17 | Co Leicester | 8:37.29 |
| 4 | 5 | Daniel Ferguson | 18 | West Lothian | 8:36.28 |
| 5 | 4 | Daniel Donovan | 16 | Guildford Ct | 8:36.30 |
| 6 | 2 | Joseph Deighan | 16 | Stockport Mo | 8:38.72 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 7 | Liam McLaughlin | 17 | Warrender Ba | 8:35.75 |
| 2 | 9 | Ellis Stanhope | 17 | RTW Monson | 8:34.71 |
| 3 | 11 | Henry Pearce | 17 | Co Peterboro | 8:32.08 |
| 4 | 13 | Ciaran Thomas | 17 | Newcastle | 8:31.02 |
| 5 | 12 | Jamie McCaffray | 18 | Modernian | 8:31.92 |
| 6 | 10 | Ewan Wilson | 17 | Co Salford | 8:34.38 |
| 7 | 8 | Charley Langford | 16 | Thanet Swim | 8:34.73 |
| 8 | 6 | Daniel Marotta | 18 | Swansea Aq | 8:36.26 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 15 | Jackson O'Rourke | 17 | Northampton | 8:30.85 |
| 2 | 17 | Ralph Muncer | 18 | Co St Albans | 8:29.76 |
| 3 | 19 | Joshua Williams | 17 | Wycombe Dist | 8:28.40 |
| 4 | 21 | Adam Wilson | 18 | Newcastle | 8:25.33 |
| 5 | 20 | Alexander Hindle | 17 | Co Birm'ham | 8:27.75 |
| 6 | 18 | Jack Buswell | 18 | Northampton | 8:28.72 |
| 7 | 16 | Archie Plowman | 18 | Northampton | 8:30.05 |
| 8 | 14 | Bailey Hairsine | 20 | Co Manch Aq | 8:30.97 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 23 | Myles Robinson-Young | 17 | Co Peterboro | 8:23.31 |
| 2 | 25 | George Barber | 18 | Royal Wolv | 8:21.56 |
| 3 | 27 | Ryan Reader | 21 | Derventio | 8:20.54 |
| 4 | 29 | Nathan Wells | 21 | Loughboro Un | 8:19.66 |
| 5 | 28 | Charlie Poole | 18 | Co Leicester | 8:20.12 |
| 6 | 26 | Hector Pardoe | 18 | Ellesmere Co | 8:21.17 |
| 7 | 24 | Max Murphy | 19 | Loughboro Un | 8:22.19 |
| 8 | 22 | Harley Beentjes | 19 | Edinburgh Un | 8:24.17 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 31 | Davide Arioli | 17 | Millfield | 8:16.08 |
| 2 | 33 | William Bell | 17 | Co Leicester | 8:10.76 |
| 3 | 35 | Luke Turley | 19 | Bath NC | 8:07.61 |
| 4 | 37 | Tom Derbyshire | 21 | Bath NC | 7:58.26 |
| 5 | 36 | Nathan Hughes | 19 | Hatfield | 8:05.15 |
| 6 | 34 | Samuel Budd | 21 | Co Sheffield | 8:08.97 |
| 7 | 32 | Samuel Osborne | 18 | Co Birm'ham | 8:15.33 |
| 8 | 30 | William Ryley | 21 | Bath Univ | 8:17.00 |