Actor McKellen
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">actor mckellen</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ian that I've seen before include "- Botham, cricketer" , "Albert Beale's first name in EastEnders" , ". . . Botham, . . . Woosnam" , "- McEwan, Eng. writer" , "The familiar Dr Paisley" .)