Film my new gravel net working (6,5,3)

I believe the answer is:

twelve angry men

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

'my new gravel net working' is the wordplay.
'working' is an anagram indicator.
'my'+'new'+'gravel'+'net'='mynewgravelnet'
'mynewgravelnet' anagrammed gives 'TWELVE ANGRY MEN'.

(Another definition for twelve angry men that I've seen is " 6A [FILM]".)

I've seen this clue in The Independent.

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