How neat. I'd buy some Actimel too if a sharply dressed lady would show up at my door instead of a suicidal looking grocery delivery guy who carves the local word for "tip" in the elevator every time he doesn't get any.
Well, I'd go for a sharply dressed lady too, but ... what I get is very cheerful Tesco drivers in hiviz, who unpack my groceries and stash the chilled stuff in my fridge. It's a great (UK) service, and they quite often ask if they can do anything else for me (I'm bed-bound) like make a cup of tea. Cannot recommend them highly enough.
I hadn’t thought about it before, but you’re right: the grocery delivery folks in the UK were always quite cheerful! We used Ocado mostly, and their drivers were always happy for a chat while unloading.