Popular young actors, say, playing part in support (8)

I believe the answer is:

bratpack

'popular young actors say' is the definition.
(a bratpack is a group of young performers)

'playing part in support' is the wordplay.
'playing' indicates anagramming the letters.
'in' is an insertion indicator.
'support' becomes 'back' (to back is to support or endorse).
'part' with letters rearranged gives 'ratp'.
'ratp' going into 'back' is 'BRATPACK'.

(Another definition for bratpack that I've seen is " Group of rowdy young American film stars of he 1980s".)

I've seen this clue in The Times.

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