EVENT 102 Boy Open 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 2 | Oliver STEELE | 15 | | Co Leeds | 20:18.91 |
| 1 | 4 | Quinn-Austin KELLY | 14 | | Co Bradford | 20:01.63 |
| 2 | 6 | Luke WINTERBOTTOM | 16 | | Co Bradford | 19:37.48 |
| 3 | 8 | Thomas EARDLEY | 15 | | RichmondDale | 19:24.40 |
| 4 | 10 | Matteo MONACO | 13 | | South Lincs | 19:03.10 |
| 5 | 9 | Harry SENIOR | 15 | | Co Leeds | 19:16.36 |
| 6 | 7 | Joshua KELLY | 13 | | KingstonHull | 19:29.60 |
| 7 | 5 | Harrison MASKREY | 14 | | Donc Dartes | 19:47.40 |
| 8 | 3 | George CARRY | 14 | | Co Leeds | 20:18.03 |
| 9 | 1 | William KERSHAW | 12 | | Blackpool Aq | 20:32.80 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 12 | Joseph HALL | 14 | | Co Leeds | 18:46.63 |
| 1 | 14 | Jack BIGNELL | 14 | | Northampton | 18:33.86 |
| 2 | 16 | Henry FIRTH | 17 | | Co Leeds | 18:13.40 |
| 3 | 18 | Jack COLLINS | 14 | | KingstonHull | 18:03.27 |
| 4 | 20 | Benjamin GIBBONS | 15 | | Northampton | 18:01.30 |
| 5 | 19 | Cohen STEPHENSON | 17 | | Co Leeds | 18:01.66 |
| 6 | 17 | Oliver SORRELL | 15 | | South Lincs | 18:09.00 |
| 7 | 15 | William HICKLIN | 13 | | Co Leeds | 18:29.27 |
| 8 | 13 | Edun ROWE | 14 | | Northampton | 18:36.89 |
| 9 | 11 | Owen BOYES | 18 | S14 | Blackpool Aq | 18:56.10 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 22 | Alfie BISBY | 15 | | South Lincs | 17:53.40 |
| 1 | 24 | George DAINTITH | 14 | | Warrington W | 17:28.80 |
| 2 | 26 | William POYSER | 17 | | Leic Sharks | 17:18.20 |
| 3 | 28 | Tom MCCABE | 17 | | Stockport Mo | 16:58.50 |
| 4 | 30 | Razvan GRUMAZESCU | 18 | | Northampton | 16:50.40 |
| 5 | 29 | Joseph MOMENT | 16 | | KingstonHull | 16:56.80 |
| 6 | 27 | Luke STEVENS | 16 | | Leic Sharks | 17:03.60 |
| 7 | 25 | Benjamin ROGERS | 17 | | RichmondDale | 17:24.20 |
| 8 | 23 | George BROOKS | 15 | | Co Leeds | 17:51.81 |
| 9 | 21 | Oscar GOLDSMITH | 14 | | South Lincs | 17:58.60 |