Alan Bennett, perhaps rare Sky broadcast with him on? (12)
I believe the answer is:
yorkshireman
'alan bennett perhaps' is the definition.
(I've seen this before)
'rare sky broadcast with him on?' is the wordplay.
'broadcast with' indicates an anagram (letters scattered or cast around).
'rare'+'sky'='raresky'
'him'+'on'='himon'
'raresky' mixed up with 'himon' can make 'YORKSHIREMAN'.
(Other definitions for yorkshireman that I've seen before include "strong-armed character, but thickheaded!" , "Person from e.g. Leeds" , "Alan Bennett perhaps" .)