| Heat Number - 1 | ||||||
| Lane | Comp.No. | Name | YoB | Cat | Club | Time |
| 0 | 1 | Islam Dokaev | 98 | S8 | Belgium | 5:29.23 |
| 1 | 2 | Leo McCrea | 03 | S6 | Switzerland | 5:26.51 |
| 2 | 3 | Arian-Cristian Notretu | 05 | S9 | Romania | 5:13.41 |
| 3 | 4 | Michael Jones | 94 | S7 | GBR - MANN | 4:49.74 |
| 4 | 5 | Mark Malyar | 00 | S7 | Israel | 4:33.64 |
| 5 | 6 | Jacob Leach | 00 | S9 | GBR - COKN | 4:29.82 |
| 6 | 7 | Jonathan Booth | 98 | S9 | GBR - BOKE | 4:29.37 |
| 7 | 8 | Oliver Hynd | 94 | S9 | GBR - NOVA | 4:29.06 |
| 8 | 9 | Oliver Carter | 00 | S10 | GBR - WUSX | 4:26.06 |
| 9 | 10 | Alex Portal | 02 | S13 | France | 4:06.05 |