Corrupt camp crony securing a perk (7,3)
I believe the answer is:
company car
'perk' is the definition.
(I know that company car is a type of perk)
'corrupt camp crony securing a' is the wordplay.
'corrupt' is an anagram indicator (a corrupted spelling of the word).
'securing' means one lot of letters goes inside another.
'camp'+'crony'='campcrony'
'campcrony' anagrammed gives 'companycr'.
'companycr' going around 'a' is 'COMPANY CAR'.
(Other definitions for company car that I've seen before include "Wheels on firm" , "Vehicle provided by one's employer" .)