Few Labour figures have loomed as controversially over modern British politics as Peter Mandelson . Once dubbed the 'Prince of Darkness' for his ruthless political instincts, the New Labour grandee spent decades at the heart of power. Now, however, his appointment as Britain's former ambassador to the United States has become the scandal threatening to engulf Sir Keir Starmer's premiership. The government has released more than 1,000 pages of documents relating to Mandelson's controversial