Buckingham Palace hits back at claims in a book by Princess Diana’s brother

In a new book, Charles Spencer recounts the traumatic days after Diana was killed in a car crash in Paris in 1997 at the age of 36. He alleges that he argued with the then-Prince Charles, Diana’s estranged husband, over palace plans for Prince William and Prince Harry to walk behind her coffin during the funeral procession.

Spencer says he told Charles that Diana would not have wanted her sons, then 15 and 12, to undergo the ordeal. He claims Charles told him: "rest assured, we'll forget her soon enough." He accuses Charles of having "contempt" for his ex-wife.

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The Daily Mail is publishing extracts from Spencer's book, Swan Song: Diana, My Sister , which is due to be published next week.