“Their Trade Is Treachery”,
Great book written in 1976 or so by Pincher, using this title also;
exposes huge amounts of communist infiltration into the political classes
About 70 Members of Parliament were revealed to be Communist Party UK members, open or secret.
Kinda like our list of 80 or so Socialists of America members all open ?!?!
Pincher has a new “Treachery”, 2009. FOIA (US & Britain) has opened lots of info. Good read