Information about a heartless left-wing plot (6)
I believe the answer is:
garden
'plot' is the definition.
(garden is a kind of plot)
'information about a heartless left-wing' is the wordplay.
'information' becomes 'gen' (gen is a kind of information).
'about' means one lot of letters goes inside another.
'heartless' means to remove the middle letters.
'left wing' becomes 'red' (I've seen this in other clues).
'red' with its middle removed is 'rd'.
'a'+'rd'='ard'
'gen' going around 'ard' is 'GARDEN'.
(Other definitions for garden that I've seen before include "Cultivate a plot" , "Flower-plot" , "Plot of ground for plants" , "Green space attached to a house" , "Cultivated area" .)