London Labour and London Poor.
Henry Mayhew
The saving grace of that era is that though Marx was chased from Germany, Belgium and France. It was London that gave him political asylum. It did so for many others. Marx did not suggest anarchy in England itself. True he would have been severely dealt with, had he had done this.
Marx was shaped by the misery he saw about him. (Excuse my rant).
I read that book - it was quite an eye-opener.