The Duchess of Cambridge
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Kate holiday photos: Royals 'will not compromise on privacy'

25 April 2013 Last updated at 09:12 BST

The head of the publisher of France's Closer magazine and a photographer are under formal investigation in France over the publication of pictures of a sunbathing Duchess of Cambridge.

Topless pictures of the duchess, taken during a private holiday in France, were published by Closer in September.

The BBC's Christian Fraser said that the vigorous nature of the investigation was a warning to media organisations across the world.