Prince Andrew 's biographer Andrew Lownie claims the late Queen Elizabeth was not only aware of but complicit in covering up the duke's questionable financial dealings, RadarOnline.com can reveal.

"They knew exactly what was going on. People are not going to like it, but the Queen was colluding in this," Lownie declared. Article continues below advertisement

A 'Serial Sex Addict?'

The 64-year-old author's explosive new book, The Rise and Fall of the House of York , lays bare decades of indulgence and scandal surrounding the 65-year-old duke and his former wife, Sarah Ferguson , 65.

It details Andrew's lurid lifestyle – including claims he is a "serial sex addict" who reportedly slept with more than 1,000 women and often behaved like a spoilt child within royal residence

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