See, in dubious tavern, a Bond villain (9)
I believe the answer is:
trevelyan
'a bond villain' is the definition.
The definition suggests a singular noun which matches the answer.
'see in dubious tavern' is the wordplay.
'see' becomes 'ely' (see is a place with a cathedral - e.g. Ely).
'in' indicates putting letters inside.
'dubious' indicates anagramming the letters.
'tavern' is an anagram of 'trevan'.
'ely' inserted into 'trevan' is 'TREVELYAN'.
Can you help me to learn more?
(Other definitions for trevelyan that I've seen before include "G. M. -, historian (English Social History)" , "Goldeneye character" .)