EVENT 309 Mens Open 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Matthew Woodhall | 15 | Co Sheffield | 16:10.30 |
| 1 | 3 | Tyler Melbourne-Smith | 14 | Co Liverpool | 16:08.33 |
| 2 | 5 | Hubert Gdaniec | 15 | Plymouth Lea | 16:07.71 |
| 3 | 7 | Joey Tippin | 16 | Co Leicester | 16:04.84 |
| 4 | 9 | Joshua Weston | 15 | Wycombe Dist | 16:00.64 |
| 5 | 8 | Thomas Sansome | 16 | Wycombe Dist | 16:04.40 |
| 6 | 6 | Thomas Trebilcock | 16 | Plymouth Lea | 16:07.70 |
| 7 | 4 | Jevon Penny | 16 | Northampton | 16:07.99 |
| 8 | 2 | Samuel Tucker | 15 | Wycombe Dist | 16:09.50 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 11 | Joseph Sadler | 16 | Nova Cent'n | 15:58.71 |
| 1 | 13 | Liam Dawson | 14 | Nova Cent'n | 15:55.38 |
| 2 | 15 | Ralph Muncer | 18 | Co St Albans | 15:52.64 |
| 3 | 17 | Henry Pearce | 17 | Co Peterboro | 15:51.60 |
| 4 | 19 | Thomas Davidson | 17 | Wolv'hampton | 15:50.21 |
| 5 | 18 | Adam Hall | 18 | Loughboro Un | 15:50.35 |
| 6 | 16 | Joseph Kingsland | 16 | Nova Cent'n | 15:52.45 |
| 7 | 14 | Joshua Fowles | 20 | Witham Dolph | 15:54.01 |
| 8 | 12 | Joshua Skinner | 16 | Nova Cent'n | 15:58.23 |
| 9 | 10 | Daniel Gencas | 16 | Romford Town | 16:00.34 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 21 | Nathan Wells | 21 | Loughboro Un | 15:46.34 |
| 1 | 23 | Joseph Deighan | 16 | Millfield | 15:35.47 |
| 2 | 25 | Hector Pardoe | 18 | Ellesmere Co | 15:31.45 |
| 3 | 27 | William Bell | 17 | Co Leicester | 15:26.75 |
| 4 | 29 | Daniel Jervis | 23 | Swansea Uni | 15:02.77 |
| 5 | 28 | Davide Arioli | 17 | Millfield | 15:24.74 |
| 6 | 26 | Joshua Williams | 17 | Wycombe Dist | 15:29.86 |
| 7 | 24 | Alexander Hindle | 17 | Co Birm'ham | 15:32.00 |
| 8 | 22 | Max Murphy | 19 | Loughboro Un | 15:40.05 |
| 9 | 20 | Jackson O'Rourke | 17 | Northampton | 15:50.17 |