Stratford river (4)
I believe the answer is:
avon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stratford river</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 avon that I've seen before include "Former English county" , "Shakespeare was known as the Bard of . . . ." , "Casual attitude" , "River flowing through Bristol to the Severn" , "English river name in multiple use" .)