Group of MPs, including conservative, come and settle time for reform (6,9)
I believe the answer is:
select committee
'group of mps' is the definition.
(UK political term)
'including conservative come and settle time for reform' is the wordplay.
'including' means one lot of letters goes inside another.
'conservative' becomes 'c' (abbreviation commonly used in UK politics).
'and' says to put letters next to each other.
'for reform' indicates an anagram (I've seen this in other clues).
'come'+'settle'+'time'='comesettletime'
'comesettletime' with letters rearranged gives 'seletcommittee'.
'c' inserted into 'seletcommittee' is 'SELECT COMMITTEE'.
(Other definitions for select committee that I've seen before include "parliamentary group" , "Group of MPs" .)