King Cole united assembly as anticipated (9)
I believe the answer is:
naturally
'as anticipated' is the definition.
(I've seen this before)
'king cole united assembly' is the wordplay.
'king cole' becomes 'nat' (I've seen this before).
'united' becomes 'U' (abbreviation).
'assembly' becomes 'rally' (I've seen this in other clues).
'nat'+'u'+'rally'='NATURALLY'
(Other definitions for naturally that I've seen before include "Without affectation" , "In an artless way" , "as you might expect" , "As a matter of course" , "without medical assistance" .)