Dissident, stoical, reviewed Tory cuts (10)
I believe the answer is:
iconoclast
'dissident' is the definition.
(dissident or non-conformist figure)
'stoical reviewed tory cuts' is the wordplay.
'reviewed' is an anagram indicator (To look at again and re view).
'tory' becomes 'con' (abbreviation for Conservative).
'cuts' means one lot of letters goes inside another (a group of letters 'cuts' into another word).
'stoical' is an anagram of 'ioclast'.
'ioclast' placed around 'con' is 'ICONOCLAST'.
(Other definitions for iconoclast that I've seen before include "Critic of faith" , "heretic" , "Rebel" , "Challenging type" , "Debunker of reputations" .)