Thanks to Wikipedia I’ve learnt that Quavers, Monster Munch, Smith’s and Wotsits are ALL owned by Walkers. Which is owned by American company Frito-Lay, who also own Doritos. And they in turn are owned by the giant PepsiCo. That’s kind of depressing, apart from Golden Wonder and McCoys they seem to own every British potato/corn snack food.
Also PepsiCo own Tropicana (which I knew about), Copella (which I didn’t) and Quaker Oats (which I would have had down as brand least likely to be owned by giant multinational corporation)