British actress regularly in audition (9)

I believe the answer is:

knightley

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'british actress' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'regularly in audition' is the wordplay.
'regularly' becomes 'nightly' (happening every night).
'in audition' shows a homophone (sound like) (audition can mean hearing).
'nightly' is a homophone of 'KNIGHTLEY'.

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I've seen this clue in The Times.

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