Endless spin in many institutions starts around copier (8)
I believe the answer is:
imitator
'copier' is the definition.
(someone or something that copies)
I can't explain the rest of the clue.
(Other definitions for imitator that I've seen before include "A trio, Tim, is a mimic" , "One who copies another" , "follower" , "Someone copying the behaviour of another" , "Copier (of another)" .)