| Heat Number - 1 | ||||||
| Lane | Comp.No. | Name | YoB | Cat | Club | Time |
| 0 | 1 | Sebastian Williams | 04 | S6 | Mt Kelly | 5:49.81 |
| 1 | 3 | Owen Say | 01 | S8 | Nova Cent'n | 5:11.14 |
| 2 | 5 | Tomas Navarro-Barber | 04 | S9 | Portsmouth N | 4:49.63 |
| 3 | 7 | Luke Batty | 05 | S9 | Bolton Metro | 4:51.24 |
| 4 | 9 | Kieran Williams | 04 | S10 | Newquay | 4:33.35 |
| 5 | 8 | Zack Sturgess | 07 | S10 | S Bournem'th | 4:43.59 |
| 6 | 6 | Balthazar Bradshaw | 06 | S10 | Brompton | 5:09.04 |
| 7 | 4 | Max Davies | 07 | S9 | Worksop | 5:22.94 |
| 8 | 2 | Zach Washington-Young | 90 | S7 | Co Manch Aq | 5:37.59 |