Fodor's Expert Review Hatchards
This is the United Kingdom's oldest bookshop, open since 1797 and beloved by writers themselves—customers have included Oscar Wilde, Rudyard Kipling, and Lord Byron. Despite its wood-paneled, "gentleman's library" atmosphere and eclectic selection of books, Hatchards is now owned by the large Waterstone's chain. Nevertheless, the shop still retains its period charm, aided by the staff's old-fashioned helpfulness and expertise. Look for the substantial number of books signed by notable contemporary authors on the well-stocked shelves. There's another branch in the St. Pancras International train station.