BBC Trust chairman, Lord Patten, has told Radio 4's World at One programme that he insisted that Newsnight editor Peter Rippon's blog should be corrected after he was informed of its inaccuracies on Sunday.
He had previously supported Mr Rippon's explanation for dropping the programme's Jimmy Savile investigation.
Should I have disbelieved what a senior editor said? I have at a certain point to believe. I can't disbelieve everything that is said.