Health Secretary James Murray says Peter Mandelson's appointment as UK ambassador to the US "was a mistake", ahead of the release of a second batch of files. The government has faced criticism over claims some documents are being withheld, but ministers insist only material requested by police is being held back. <br /> Report by Johals. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn
