Edwardian dresser police officer upended (3)
I believe the answer is:
Here is my best explanation:
'edwardian dresser' is the definition.
'police officer upended' is the subsidiary indication.
'police officer' becomes 'det' (short form of Detective).
'upended' shows that the letters should be reversed in order (in a down clue, letters go up).
'det' back-to-front is 'ted'.
(Other definitions for ted that I've seen before include "Comic TV Father", "Edward, in short", "Chap", "Man's name; make hay", "Craggy Island Father", ". . . Kennedy, Father . . .", "Turn and spread (hay)", "- Hughes, Eng. Poet", "Heath or Hughes?" and "- - Heath (politics)".)