Bans seem largely unlikely for this major debating centre (7,8)
I believe the answer is:
general assembly
'this major debating centre' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'bans seem largely unlikely' is the wordplay.
'unlikely' is an anagram indicator.
'bans'+'seem'+'largely'='bansseemlargely'
'bansseemlargely' with letters rearranged gives 'GENERAL ASSEMBLY'.
'for' acts as a link.
Can you help me to learn more?
(Another definition for general assembly that I've seen is " governing body".)