LONDON — With luxury flickering back to life, it’s now the high street’s turn to feel the pain of dwindling consumer confidence. The cost-of-living crisis in the U.K., and across Europe, has dented the sales of two fashion retail behemoths, Primark and Marks & Spencer, which have both begun the new year on a down note. On Thursday, Primark’s parent Associated British Foods warned that adjusted operating profit and adjusted earnings per share for the 2025-26 fiscal year are expected to be “below” the numbe ...