Doesn't this come down to whether the leafleting is deemed to be "incendiary" or not ? I have tried to read the wording on the link and its not easy to decipher. But it doesn't look to be spreading sedition. As I said, best ignored, along with all the others religious butters that we have on our street.
By the way, I was approached by two charmingly polite and smiley young American chaps yesterday, in a suburban street, campaigning for the Church of Latter Day Saints. I say young men but they both looked no more than 14 to me, barely out of Cub Scouts. When I politely declined their offer, they politely went on their way. They looked awfully sweaty though, in their Bry-Nylon white shirts, as it was at least 25 degrees in Swansea yesterday. I think Mormons must be the only people left who wear Bry-Nylon.
If only all religious nutters were as obliging and polite !