| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 3 | 1 | Thomas KINNEAR | 12 | Grantham | 4:16.69 |
| 4 | 3 | Leo BARNETT | 12 | Grantham | 3:30.00 |
| 5 | 2 | George LEONARD | 11 | Grantham | 3:54.66 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 5 | Eugene CHEU | 12 | Grantham | 3:20.00 |
| 3 | 7 | Stanley THURLOW | 11 | Lincoln Vulc | 3:09.12 |
| 4 | 9 | Oliver SHEPHERD | 14 | Deepings | 2:32.50 |
| 5 | 8 | James HUCKLE | 12 | Lincoln Vulc | 2:51.77 |
| 6 | 6 | Oliver CLARKE | 11 | Deepings | 3:11.51 |
| 7 | 4 | Henry WILLERTON | 10 | Skegness | 3:26.10 |