EVENT 612 Mens 11/14 Yrs 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 3 | 1 | Patch Robinson | 12 | teamipswich | 20:14.70 |
| 4 | 3 | William Fawcett | 12 | Watford SC | 19:59.63 |
| 5 | 2 | Ben Howlett | 12 | teamipswich | 20:03.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 4 | Ryan Wall | 12 | Royston | 19:57.61 |
| 2 | 6 | Ben Minister | 13 | Thurrock | 19:22.72 |
| 3 | 8 | Safford Hewitt-White | 13 | Co Peterboro | 19:00.30 |
| 4 | 10 | Kian Quinlan | 13 | Bo Southend | 18:55.10 |
| 5 | 9 | Zak Troman | 12 | Colchester | 19:00.16 |
| 6 | 7 | Finn Cooper | 13 | teamipswich | 19:16.70 |
| 7 | 5 | Daniel Kendall | 13 | Co Ely | 19:37.16 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 12 | Daniel McGuinness | 13 | Basildon Ph | 18:25.21 |
| 2 | 14 | Denis Morine | 14 | Basildon Ph | 18:22.05 |
| 3 | 16 | Aidan Pilcher | 14 | teamipswich | 18:15.40 |
| 4 | 18 | Oskar Farkas | 14 | Co Cambridge | 17:22.70 |
| 5 | 17 | Jude Hills | 14 | Thurrock | 17:28.45 |
| 6 | 15 | Matthew Monie | 14 | Co Cambridge | 18:17.40 |
| 7 | 13 | Jenson Hurrell | 14 | Thurrock | 18:23.90 |
| 8 | 11 | Daniel Clayton | 13 | teamipswich | 18:40.10 |