Monday, November 9, 1998 Published at 10:52 GMT
Author says Charles 'secretly pleased'
Prince Charles has already denied any involvement in the book
BBC ONE is broadcasting Panorama's 'Charles, a Life in Waiting' at 2200 GMT.
Author Penny Junor has denied her book about the Prince of Wales is an attack on Diana, Princess of Wales.
She also revealed that the prince would be "secretly pleased" that his side of the marriage had been told in her biography, Charles: Victim or Villain?
She claimed Princes William and Harry would also be heartened that someone had taken their father's side
"I appreciate the princes' and sensitivity and have written this book with them in mind.
"I am presenting their father in a more balanced light. I think they might appreciate that."
It also says Diana had an affair with her bodyguard and that the Queen was reluctant to allow Princess Diana's body to be flown home in a Royal plane.
It caused controversy when the allegations were first published in a Sunday newspaper a fortnight ago.
Buckingham Palace dismissed the claims as "a grotesque misrepresentation of the truth".
Prince Charles and Mrs Parker Bowles also issued an unprecedented joint statement denying any involvement in the book which, they say, was neither authorised, solicited nor approved by them.
But Ms Junor says she spoke to more than 30 of Prince Charles' closest friends, relatives and advisers.
She argues the prince's circle felt it was time to challenge inaccuracies contained in previous books; that the prince's relatives and friends feel he has suffered enough and misconceptions about the relationship should be corrected.
"As anyone who chooses to read my book will see, I have not taken any side in this story. I have merely reported the facts as I found them and I do not apportion blame."
Some commentators have pointed out that some of the conversations on which the book was based took place before Diana's death - when friends of the prince may have felt more able to be candid than they would now.
Others say the book could destroy the public rehabilitation of Charles which his advisors have so carefully crafted since Princess Diana's death.