Huge mountain towering over British city (6)

I believe the answer is:

bigben

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'towering over british city' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'huge mountain' is the wordplay.
'huge' becomes 'big' (similar in meaning).
'mountain' becomes 'ben' (as in Ben Nevis).
'big'+'ben'='BIGBEN'

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I've seen this clue in The Irish Times.

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