Churchill is still hated by the commies in Britain to this day. I watched the series “WWII in Colour” which is a British documentary, and they claimed that Churchill knew about the death camps and did nothing to stop them...like he could have at the time.
Since the Brits began to be so successful breaking German codes, there was a lot they couldn’t/wouldn’t do, just so they could hide the fact that they WERE able to read German messages.
They wanted to protect that advantage as long as they could I guess.