A man walks past a shop in central London in this December 18, 2008 file photo. The crisis has brought a disastrous holiday season for many retailers, who depend on the frenzy to buy Christmas presents to push them into the black for the year. For its window display, a shop in London adapted a classic World War One recruiting poster in which a steely-eyed moustachioed general points at passers-by above the words "Your Country Needs You." The new admonishment is: "Shop, Damn It, SHOP." To match story Signs of the Times FINANCIAL/TIMES.