Jaydon was last seen at 4.30pm yesterday (January 30).
Officers say he was wearing a baby blue Nike tracksuit with black Air Forces.
If you see him or have any information on his whereabouts, contact police on 101 quoting reference number 24mis003107.
A spokesperson for Bromley police said: “MISSING | We are appealing for information to locate 12 YO Jaydon from BROMLEY. He was last seen today.
“@1630 wearing a baby blue Nike tracksuit and black air forces. Anyone with information is asked to call 101 quoting 24mis003107.”