Precisely why such foreign 'muck' should be approached with great caution. British crisps are world leaders. Let others design cars, pastries and so forth but crisps...leave it to the experts: Britain. Other countries need not apply. :)
Walkers, after many years of eating before the 2nd crisp revolution, are simply for peasants or livestock.
Sorry, but I give you...the Salty Dog range! For the connoisseurs amongst us...