Top actress playing for them, say (10)
I believe the answer is:
spectators
'them say' is the definition.
I can't judge whether this defines the answer.
'top actress playing' is the wordplay.
'playing' is an anagram indicator.
'top'+'actress'='topactress'
'topactress' with letters rearranged gives 'SPECTATORS'.
'for' is the link.
(Other definitions for spectators that I've seen before include "Viewers" , "Those watching" , "Witnesses" .)