Provide help for a British sci-fi film (4)

I believe the answer is:

abet

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'provide help' is the definition.
I can't judge whether this definition defines the answer.

'a british sci-fi film' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'sci-fi film' becomes 'et' (E.T. the Extra-Terrestrial).
'a'+'b'+'et'='ABET'

'for' is the link.

Can you help me to learn more?

(Other definitions for abet that I've seen before include "Beat (anag.)" , "Criminally endorse" , "Encourage or assist (someone) to commit crime" , "Aid and help, perhaps in crime" , "Encourage (offence)" .)

I've seen this clue in The Guardian.

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