A film show (7)

I believe the answer is:

cabaret

This clue is a double definition.

'a film' is the first definition.
(I've seen this before)

'show' is the second definition.
(cabaret is a kind of show)

(Other definitions for cabaret that I've seen before include "Entertainment provided in a nightclub" , "Revue" , "Variety entertainment" , "Entertainment at restaurant" , "Nightclub 12ac" .)

I've seen this clue in the Evening Standard.

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