Bunzl delivers paper cups to cafés, swabs to hospitals and packaging to supermarkets, via 21,000 staff in 31 countries. It’s one of those mega companies that few people have ever heard of. Starting as a Slovakian haberdashery in 1854, it has grown into a FTSE 100 giant delivering non-edible items to 800,000 customers. It does dull work that someone has to do, and Bunzl does well. Profit margins are thin, but its scale has historically made up for that. Bunzl is a prolific deal-maker, spending...