Home county (6)
I believe the answer is:
surrey
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">home county</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 surrey that I've seen before include "County SW of London" , "Home county" , "County near London" , "Horse-drawn vehicle" , "South-eastern county" .)