I think farnell, rs, cpc have partially automated order systems. It looks like some of the parts, jelly bean stuff off reels, have been individually bagged and labelled using pick and pack machines. They also charge reeling fees for bulk orders that don't amount to a full reel etc.
Actually my last RS order they started using paper bags for some of the components, obviously inline with the current anti-plastic waste initiative. But then in the same order where I ordered 10 5V regulators, they came (TO-20) individually in 10 anti-static bags.
That said I got an order from CPC where everything looked like it was pick&packed in individual pink antistatic bags, but there were handwritten order numbers on each individual one!