OK, so it’s not totally unused, I actually used it for 2 hours the night I got it then realised it was way too hot as I got the wrong tog and haven’t used it since.
I bought it a few months ago and it’s just been taking up space since then, now I need to have a bit of a clear out and I understand charity shops won’t take them and it seems homeless shelters only want singles, this is a double. It seems a waste to just throw it away and there are loads of homeless people near where I live (Central Southampton) - should I just approach one of them and ask if they want it or is that weird/insulting do you think?