Wooden actor in county town (6)
I believe the answer is:
oakham
'county town' is the definition.
Both the answer and definition are singular nouns.
Perhaps you can see an association between them that I can't see?
'wooden actor' is the wordplay.
'wooden' becomes 'oak' (I can't explain this - if you can you should give a lot more credence to this answer).
'actor' becomes 'ham' (ham is a kind of actor).
'oak'+'ham'='OAKHAM'
'in' is the link.
Can you help me to learn more?
(Another definition for oakham that I've seen is " Former county town in Rutland".)