Entertainment district of London (4)
I believe the answer is:
soho
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">entertainment district of london</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for soho that I've seen before include "Entertainment district in London's West End" , "London's former Bohemia" , "Part of London and NY" , "London night life area" , "Huntsman's call - area of London" .)