The Attorney General's decision to block public disclosure of letters the Prince of Wales wrote to Government ministers was upheld by the High Court today.
Guardian newspaper journalist Rob Evans accused Dominic Grieve of going wrong in law and "overriding an independent and impartial tribunal".
But today the Lord Chief Justice, Lord Judge, sitting with Lord Justice Davis and Mr Justice Globe, refused to overturn Mr Grieve's veto last October on the release of correspondence between Charles and seven Government departments.
They ruled that it was "an exceptional case meriting use of the ministerial veto to prevent disclosure and to safeguard the public interest".
Mr Grieve, the Government's principal legal adviser, said his decision was based on his view that the correspondence was undertaken as part of the Prince's "preparation for becoming king".
Making the letters public could potentially damage the principle of the heir to the throne being politically neutral, and so undermine his ability to fulfil his duties when king, said Mr Grieve.
The High Court has lifted an injunction preventing the removal of the last anti-war protest tent near the Houses of Parliament. Judges said that it would be "lifted immediately", leaving Westminster Council free to clear Parliament Square of the tent as soon as it is ready.
The injunction had been in place while peace campaigner Maria Gallastegui challenged the legality of new byelaws giving the local authority power to remove tents from the road and pavement around the square. High Court judge Sir John Thomas and Mr Justice Silber have ruled the byelaws lawful.
Ms Gallastegui returned to court to ask for permission to appeal to the Court of Appeal, arguing her case was of public importance and that the High Court had got the law wrong. The court refused her request that the injunction allowing her tent to remain should be maintained while she appealed.
Rules preventing demonstrators sleeping near the Houses of Parliament were upheld by the High Court in a landmark ruling today.
Two judges rejected a test case human rights challenge brought by veteran peace campaigner Maria Gallastegui, who has been conducting an authorised 24-hour vigil on the East Pavement of Parliament Square in London since 2006.
Sir John Thomas, who is president of the Queen's Bench Division, sitting with Mr Justice Silber, said the rules were "plainly" lawful and did not offend against the Human Rights Act.