Conservative politician describing a holiday complex (4)
I believe the answer is:
camp
'holiday complex' is the definition.
(camp site)
'conservative politician describing a' is the wordplay.
'conservative' becomes 'C' (UK political abbreviation).
'politician' becomes 'MP' (Member of Parliament).
'describing' is an insertion indicator (describe can mean to form the outline of).
'c'+'mp'='cmp'
'cmp' placed around 'a' is 'CAMP'.
(Other definitions for camp that I've seen before include "Affected, artificial" , "Affected in mannerisms" , "doctrinaire group" , "Military settlement" , "Foppish" .)