Official permit (7)
I believe the answer is:
licence
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">official permit</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 licence that I've seen before include "Authority (or the lack of it!)" , "Pass" , "Permit; certificate" , "Self-indulgence; permit" , "Permit - excessive behaviour" .)