| Final | |||||
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 1 | Thomas Trebilcock | 03 | Swansea Uni | 3:55.55 |
| 1 | 2 | William Ryley | 98 | Co Cardiff | 3:54.74 |
| 2 | 3 | Alexander Sargeant | 02 | Millfield | 3:52.58 |
| 3 | 4 | Freddie Ashley-Sparks | 02 | Plymouth Lea | 3:52.40 |
| 4 | 5 | Tyler Melbourne-Smith | 05 | Co Liverpool | 3:48.24 |
| 5 | 6 | Harry Wynne-Jones | 05 | Co Milton K | 3:51.10 |
| 6 | 7 | Reece Grady | 05 | Stockport Mo | 3:52.50 |
| 7 | 8 | Joseph Deighan | 03 | Swansea Uni | 3:54.58 |
| 8 | 9 | Collyn Gagne | 00 | SFA Canada | 3:54.77 |
| 9 | 10 | David Annis | 06 | Royal Wolv | 3:56.10 |