Front office for countryside activity (11)

I believe the answer is:

forestation

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'countryside activity' is the definition.
The definition suggests a singular noun which matches the answer.

'front office' is the wordplay.
'front' becomes 'fore' (fore is a kind of front).
'office' becomes 'station' (I am not sure about this - if you are sure you should believe this answer much more).
'fore'+'station'='FORESTATION'

'for' is the link.

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I've seen this clue in The Guardian.

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