Christopher Warwick is an acknowledged authority on modern royal history. He is the author of the best-selling authorized biography of HRH The Princess Margaret, sister of Queen Elizabeth II. His other books include George VI & Queen Elizabeth, Two Centuries of Royal Weddings, and Abdication. He has written widely for the national press in the UK and regularly appears in television documentaries and on news items for, among other networks, the BBC, Channel 4, ARD and CTV (Canadian Television).