From my answers (I also mentioned recycling elsewhere w.r.t. local issues), he made a false assumption that I must be a Green party supporter, and seemed quite surprised when I said I'd voted Lib Dem at the last national and local elections. I didn't actually mind being surveyed in this way, it's a chance to very slightly influence a party I think is largely going the wrong way.
A bit after that pseudomonas turned up, who is staying in my spare room until he finds a somewhere to live. I quickly provided him with the important things in life; tea, internet connexion, shortest route to the pub.