| Final | |||||
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 1 | Samuel BULLINGHAM | 12 | West Suffolk | 39.59 |
| 2 | 2 | Ewan BULLOCH | 12 | Harlow Pen | 39.30 |
| 3 | 3 | Freddie LAWS | 12 | West Norfolk | 38.96 |
| 4 | 4 | Owen WEBSTER | 12 | St Felix Sch | 37.76 |
| 5 | 5 | Finn JEFFERY | 12 | St Felix Sch | 38.90 |
| 6 | 6 | Harry SWANN | 11 | Lstoft & OB | 39.20 |
| 7 | 7 | James QUINN | 11 | St Ives | 39.55 |
| 8 | 8 | Owen VAUGHAN | 12 | Chelmsford | 39.98 |