Company guard (6)
I believe the answer is:
escort
I believe this clue is a double definition.
'company' is the first definition.
(I've seen this before)
'guard' is the second definition.
(I've seen this before)
(Other definitions for escort that I've seen before include "Provide company - car - guard" , "wheels?" , "restraint" , "conduct" , "Companion (perhaps paid)" .)