For the record, of course private citizens can go door to door sharing beliefs and even seeking to recruit others. The Mormons already do it. The ACLU successfully defended the KKK’s right to free speech, no matter how offensive. So yes, these idiots are certainly allowed to go door to door, without interference from the government.
I doubt they can “monitor” a government operation but we all certainly have freedom of information rights. So, I suppose that might work.
England 1 - nil.
Yeh. No shiite Dick Tracy. Nevertheless when the government declares various emergencies certain "rights" get curtailed or could. So what you are cock-sure of, it subject to encroachment at any and all times. You know, you might have a right to assemble and/or go to church too. Until the Covid Nazis tell you you don't.