Consolidated if in due corruption (7)
I believe the answer is:
unified
'consolidated' is the definition.
(I've seen this in another clue)
'if in due corruption' is the wordplay.
'corruption' indicates anagramming the letters.
'if'+'in'+'due'='ifindue'
'ifindue' anagrammed gives 'UNIFIED'.
(Other definitions for unified that I've seen before include "Made one" , "Joined together" , "Brought together as one" .)