Nominal success including symbolic victory (5)

I believe the answer is:

gavin

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'nominal success including symbolic victory' is the definition.
I can't judge whether this defines the answer.

'success including symbolic victory' is the wordplay.
'success' becomes 'gain'.
'including' indicates putting letters inside.
'symbolic victory' becomes 'v' (I am not sure about the 'symbolic' bit.).
'gain' going around 'v' is 'GAVIN'.

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I've seen this clue in the Evening Standard.

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