Not liking broadcaster's pronouncement (4)
I believe the answer is:
anti
'not liking' is the definition.
'broadcaster's pronouncement' is the wordplay.
'broadcaster' becomes 'Auntie' (Auntie is a nickname for the BBC).
'pronouncement' shows a homophone (sound like).
'auntie' sounds like 'ANTI'.
(Other definitions for anti that I've seen before include "Negative vote" , "Not favouring" , "Definitely not pro" , "[NO MAN]" , "'No' voter" .)