A Guardian journalist accused the Attorney General Dominic Grieve of failing to show "reasonable grounds" for blocking the release of letters sent by Prince Charles to government ministers.
The High Court today ruled that Grieve's use of a ministerial veto to stop the letters being published was unlawful but the Attorney General said he will "pursue an appeal."
The public has a right to know if the heir to the throne is advocating policy or promoting causes to government ministers.
We welcome today's appeal court judgment finding that it was wrong to block the release of the letters.
We hope the Attorney General will recognise he has reached the end of the legal road and that government departments will now publish the correspondence so that the public can judge for themselves.
More top news
Tony Blair has said Leave campaigners are focusing on immigration "because they've lost comprehensively the debate on the economy".
NBA player Bryce Dejean-Jones has been shot dead after breaking into an apartment he believed to be his girlfriend's, according to police.
Nineteen people have been rescued from the English Channel after the inflatable boat they were in started taking on water.