EVENT 107 Men Open 800m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 3 | 2 | George Daintith | 08 | Warrington W | 8:40.60 |
| 4 | 4 | Joseph Moment | 06 | KingstonHull | 8:40.10 |
| 5 | 3 | Jake Chesworth | 07 | Maxwell | 8:40.30 |
| 6 | 1 | Thomas Evans | 06 | Teddington | 8:41.10 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 6 | Nathan Potter | 05 | Maidenhead | 8:37.50 |
| 1 | 8 | Ronnie Weall | 07 | Warrington W | 8:36.40 |
| 2 | 10 | Hayden Annan | 07 | RTW Monson | 8:34.80 |
| 3 | 12 | Raheel Mahmood | 07 | Romford Town | 8:33.60 |
| 4 | 14 | Harry Hewitt | 05 | Millfield | 8:33.08 |
| 5 | 13 | Joshua Keogh | 08 | Bolton Metro | 8:33.40 |
| 6 | 11 | Luke Critchlow | 05 | Stockport Mo | 8:34.52 |
| 7 | 9 | Thomas Deffains | 04 | Bath Univ | 8:36.30 |
| 8 | 7 | Finlay Pope | 07 | Stockport Mo | 8:37.10 |
| 9 | 5 | Lawrence Elliott | 05 | Seagulls SC | 8:37.50 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 16 | Rafae Shafi | 05 | Co Peterboro | 8:31.30 |
| 1 | 18 | Ivan Hart | 06 | Millfield | 8:31.00 |
| 2 | 20 | Samuel Lander | 06 | Mt Kelly | 8:28.65 |
| 3 | 22 | Oliver Rowe | 06 | Mt Kelly | 8:27.70 |
| 4 | 24 | Jack Booth Rudd | 04 | Maidenhead | 8:25.00 |
| 5 | 23 | Max Russell | 06 | Co Sheffield | 8:27.10 |
| 6 | 21 | Timothy Leberl | 02 | Beckenham | 8:28.20 |
| 7 | 19 | James Kaye | 05 | Barnet Copt | 8:29.70 |
| 8 | 17 | James Raw | 07 | Co Leicester | 8:31.20 |
| 9 | 15 | Daniel McGuinness | 06 | Basildon Ph | 8:31.90 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 26 | Tom Hawkins | 07 | RTW Monson | 8:23.40 |
| 1 | 28 | Alexander Volkovoy | 05 | Co Salford | 8:22.20 |
| 2 | 30 | George Pearson | 06 | Wycombe Dist | 8:18.80 |
| 3 | 32 | Finlay Chapman | 01 | Co Sheffield | 8:18.05 |
| 4 | 34 | Daniel English | 02 | Birm'ham Uni | 8:17.04 |
| 5 | 33 | Michael Adeney | 03 | Co Manch Aq | 8:17.10 |
| 6 | 31 | Jake Tomkins | 06 | Barnet Copt | 8:18.60 |
| 7 | 29 | Joseph Kingsland | 03 | Nova Cent'n | 8:19.35 |
| 8 | 27 | Luca Staines | 04 | Swansea Uni | 8:22.90 |
| 9 | 25 | Cameron Carlos | 05 | Barnet Copt | 8:24.74 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 36 | Harry Wynne-Jones | 05 | Co Milton K | 8:16.10 |
| 1 | 38 | Daniel Cox | 04 | Wycombe Dist | 8:14.07 |
| 2 | 40 | Collyn Gagne | 00 | SFA Canada | 8:04.96 |
| 3 | 42 | Reece Grady | 05 | Stockport Mo | 8:02.05 |
| 4 | 44 | Joseph Deighan | 03 | Swansea Uni | 7:57.03 |
| 5 | 43 | Tyler Melbourne-Smith | 05 | Co Liverpool | 7:59.80 |
| 6 | 41 | Nathan Hughes | 00 | Swansea Uni | 8:02.10 |
| 7 | 39 | Thomas Trebilcock | 03 | Swansea Uni | 8:08.00 |
| 8 | 37 | Luke McGee | 06 | Co Sund'land | 8:15.20 |
| 9 | 35 | Luke Booth | 05 | Rotherham Mo | 8:16.20 |