Conservative husband and wife prepared to meet well-informed cabinet member (5,4)
I believe the answer is:
chief whip
'cabinet member' is the definition.
(member of UK government)
'conservative husband and wife prepared to meet well-informed' is the wordplay.
'conservative husband' becomes 'ch' (this might be a standard abbreviation of which I'm unaware).
'and' means one lot of letters go next to another.
'prepared' indicates an anagram.
'to meet' is a charade indicator (letters next to each other).
'well-informed' becomes 'hip'.
'wife' anagrammed gives 'iefw'.
'ch'+'iefw'+'hip'='CHIEF WHIP'
(Another definition for chief whip that I've seen is " Top party disciplinarian".)