Guardian Editor in chief Alan Rusbridger today praised reporter Rob Evans for his 10-year campaign to allow the letters to be published.
Evans originally made an application under the Freedom of Information act to see the Prince's 2004 and 2005 letters to Government ministers.
When he was refused, he went to an Freedom of Information Tribunal who ruled they could be published in 2012.
But the Attorney General made a ruling preventing the publication of the letters by the Guardian.
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