Andrew Mountbatten-Windsor caused tension with his nephew, Prince Harry, following reports he had scathingly dismissed his wife, Meghan Markle, a royal author has claimed. In his new book, Betrayal: Power, Deceit And The Fight For The Future Of The Royal Family, Tom Bower explores the “split between the Houses of Sussex and Windsor”. Betrayal, which is published on 26 March, investigates whether the “broken bonds” between Prince William and Kate, and Harry and Meghan, can ever be repaired. A spokesperson for the Sussexes has denied the claims in the book, criticising the author for his “fixation” on the couple.  In one passage, Bower describes the tense car ride between Andrew, 66, and Harry as they arrived at Westminster Abbey for the coronation of King Charles in May 2023.  In part, the awkward atmosphere was due to reports that Andrew had dubbed Meghan an “opportunist”, with Bower referencing Andrew Lownie’s book, Entitled. Bower wrote: “In the driving rain, Harry arrived at the abbey with Andrew. The disgraced Prince was, at the time, still refusing the King’s …