West Midlands city (13)
I believe the answer is:
wolverhampton
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">west midlands city</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 wolverhampton that I've seen before include "Town NW of Birmingham" , "West Midlands city" , "Midlands town" .)