Green’s Dictionary of Slang

(UK black) an older person, a member of the immediately older generation, not actually old.

2014		Wiley ‘Grew Up In’ 🎵 Where the olders are washed and the young Gs out on the blocky want grief.
2015		K. Koke ‘I’m Nice’ 🎵 The olders call me Fuller / But the youngers call me EXO.
2020		G. Krauze What They Was 31: Olders hailing him up, next man on the block calling out.