| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Oliver Houghton | 17 | Co Manch Aq | 4:15.63 |
| 1 | 2 | Hugo Bellamy | 17 | Amersham | 4:12.98 |
| 2 | 3 | Nathan Bentley | 17 | Hatfield | 4:12.36 |
| 3 | 4 | Alexander Bregazzi | 17 | Io Man | 4:10.99 |
| 4 | 5 | George Epsly | 17 | Basildon Ph | 4:08.56 |
| 5 | 6 | Jack Smith | 17 | Derventio | 4:10.47 |
| 6 | 7 | James Gillie | 17 | Dulwich Dolp | 4:11.60 |
| 7 | 8 | Thomas Millburn | 17 | Cockermouth | 4:12.76 |
| 8 | 9 | Charlie Waddingham | 17 | Co Coventry | 4:14.78 |
| 9 | 10 | Conor Bennett | 17 | SwimTrafford | 4:16.07 |