One Channel port somewhere in Hants (7)

I believe the answer is:

andover

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'somewhere in hants' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'one channel port' is the wordplay.
'one' becomes 'an' (an apple is one apple).
'channel port' becomes 'Dover' (English Channel port).
'an'+'dover'='ANDOVER'

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(Other definitions for andover that I've seen before include "Hants town" , "Town in Hampshire" , "New town development" .)

I've seen this clue in the Evening Standard.

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