Theatre reviewer (6)
I believe the answer is:
critic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">theatre reviewer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for critic that I've seen before include "Reviewer of plays, films etc" , "A reviewer of plays, books etc" , "Reviewer - fault-finder" , "One analyses and interprets works of art" , "Judge of literary or artistic works" .)