I picked these up at the UK store near my apartment. I think I've heard that the cheese and onion are good, but I can't remember. Still... I like cheese and I like onion so how bad can it be? They had a bag of these in MAX style, that looked like Ruffles (with ridges), but I opted for the original after the salesguy recommended them.
Walkers seem to be the Lay's of the UK so they look pretty much as expected. Though, Walkers never seem to have flavoring stuff on them. I'm used to onion nibblies being green (from sour cream and onion chips) so these chips seem deceptively plain.
But what do they taste like?
Salty! The strongest flavors are the salt and onion. The onion has a bit of a bite to it - almost like eating raw onions, rather than cooked ones. I'm not really getting much 'cheese' actually. The flavor doesn't last very long, which isn't that surprising considering the chips look like they have no seasoning on them.