Seward claims that Edward had a great relationship with Fergie to start but things went downhill following her highly publicised friendship with American Steve Wyatt.
The icing on the cake was Sarah’s fall out with Edward’s wife, Sophie, Countess of Wessex.
“Increasingly suspicious of his sister-in-law, he became convinced that she had leaked information about Sophie to her press contacts.”
Edward and the Countess of Wessex recently celebrated their 20th wedding anniversary at Royal Ascot on Wednesday, June 19.
The couple, who were married in George's Chapel at Windsor Castle in 1999 and who share two children together - Lady Louise Windsor and James Viscount Severn - did not crack a smile as they battled the rain for day two of Royal Ascot.
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