| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Harry LYTHGOE | 12 | Cheshunt | |
| 2 | 4 | Ralph MISIR-YATES | 10 | Cheshunt | |
| 3 | 6 | BOBBY BUTCHER | 9 | Cheshunt | |
| 4 | 5 | HARRY EASTON | 12 | Cheshunt | |
| 5 | 3 | FABIO GIAMBRONE | 12 | Cheshunt | |
| 6 | 1 | George JONES | 17 | Cheshunt | |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | Maxwell CROFT | 11 | Cheshunt | 3:35.98 |
| 2 | 10 | Harry BARCLAY | 13 | Cheshunt | 3:14.31 |
| 3 | 12 | Max SLEZAK | 15 | Cheshunt | 2:56.63 |
| 4 | 11 | Marin KOPRIVLENSKI | 14 | Cheshunt | 3:10.51 |
| 5 | 9 | HARRISON SLAUGHTER | 14 | Cheshunt | 3:16.36 |
| 6 | 7 | Luke BARTLETT | 12 | Cheshunt | 4:19.66 |