An effortlessly cool Nick Kamen strolls into a launderette, strips to his boxer shorts and washes his jeans in front of a stunned clientele, soundtracked by Marvin Gaye’s “I Heard It Through the Grapevine.” The 1985 Levi’s 501 advert made a star of its model, and presented an image in keeping with the clothing brand’s all-American style.
But could that deep-seated association with the US prove an achilles heel? Last week, in its UK accounts, Levi’s issued a warning that…

