@Russiawithlove I’m not sure where you got the idea that, though cannabis is still illegal in the UK with the exception of some medical usage starting 1 Nov, it would be legal to do it in your home? It’s not. The NHS site, the Wikipedia for cannabis in Britain, etc., all say it’s illegal everywhere, including one’s home. Let me know if you have a resource showing otherwise (would be very helpful!). So, as far as I can tell, OP would be well within her rights to call the police non-emergency number. Yes, certain areas’ police forces have said they will not target you unless your cannabis usage is “blatant,” but it sounds like OP’s neighbor’s usage IS blatant.
While I don’t like linking the Sun, I wanted to have a recent resource (7 Nov) on smoking weed still being illegal in your own home: www.thesun.co.uk/news/3444555/smoke-weed-cannabis-legal-uk-law-neighbours/
for OP to reference (and for any MNers who might smoke weed at home - just don’t be obvious).
OP, if they’re stopping your enjoyment of your home, at least try calling the police non-emergency to report them, and if that fails, Environmental Health as others have recommended. I’m sure most of us wouldn’t report someone smoking a bit, but this sounds as if it goes far beyond one or two harmless joints. I’m sorry this is happening to you!
Also, no idea what is with these people offering no advice except a whinge about the swearing. How ridiculous and sneering. Good post with screenshot, @WhoKilledO2. We’re all adults and OP is obviously under some stress and trying to get advice. Those judging OP should go to the parenting site where swearing is banned, if it bothers them so much.