Well-organised (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">well-organised</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 efficient that I've seen before include "Functioning effectively" , "working economically at speed" , "Working in a well-organised and competent way" , "Producing results with little waste of effort" , "Performing with little wastage" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">well-organised</span>' is the definition.<br/ ><span class="explanation-format__explanation">(together can mean organised and collected)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for together that I've seen before include "as a group" , "Level-headed" , "Jointly" , "Appearing as a couple" , "In each other's company" .)