| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 1 | Aarian Lally | 14 | Hillingdon | 4:19.76 |
| 1 | 2 | Joseph Deighan | 14 | Stockport Mo | 4:19.57 |
| 2 | 3 | Charley Langford | 14 | Thanet Swim | 4:18.59 |
| 3 | 4 | Pierce Greening | 14 | Cockermouth | 4:16.04 |
| 4 | 5 | Edward Mildred | 14 | Northampton | 4:13.46 |
| 5 | 6 | Pietro Forconi | 14 | Winchester | 4:14.39 |
| 6 | 7 | Lewis Binning | 14 | Romford Town | 4:17.87 |
| 7 | 8 | Jevon Penny | 14 | Northampton | 4:19.24 |
| 8 | 9 | Harrison Barber | 14 | Biddulph | 4:19.67 |
| 9 | 10 | Angus Allison | 14 | Inverleith | 4:20.02 |