WILLIAM Dalrymple was only 22 when he lived in an Oxford house and wrote his celebrated and bestselling book In Xanadu. Messy-haired and fun, Dalrymple was definitely An Oxbridge Character, the sort who could once ask a woman from the American Deep South: "How on earth did you manage to escape from Alabama?" Since then his adventurousness and lively scholarship has taken him from the Middle East to old Delhi and today, after four books and two film series he is a new interpreter of the Raj, part of the growing legion of India Hands.