Women's summer packing: bikini, suntan lotion, pile of fat novels. Men's packing: trunks, suntan lotion, iPod. The first day of the holiday we're stretched out on the sun-lounger, paperback in hand - be it an AS Byatt or the latest Lesley Pearce or, in Cherie Blair's case, an impressively hefty tome by fashionable historian Tristram Hunt.