| B Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Jasper Lye | 18 | Co Bristol | 4:42.59 |
| 1 | 2 | Pierce Greening | 14 | Cockermouth | 4:41.55 |
| 2 | 3 | Ben Harrison | 17 | Mt Kelly | 4:37.50 |
| 3 | 4 | Adam Wilson | 16 | Newcastle | 4:36.28 |
| 4 | 5 | Nathan Wells | 19 | Loughboro Un | 4:35.40 |
| 5 | 6 | Alfie Kelly | 16 | Newcastle | 4:35.67 |
| 6 | 7 | Zak Logue | 19 | Co Sund'land | 4:36.78 |
| 7 | 8 | Yaron Gerber | 19 | Barnet Copt | 4:38.28 |
| 8 | 9 | Joshua Harris | 16 | Nova Cent'n | 4:42.11 |
| 9 | 10 | Lewis Gilchrist | 17 | Co Oxford | 4:42.95 |