Revealed: Mandelson failed vetting but Foreign Office overruled decision
Keir Starmer had [by then announced](https://www.theguardian.com/politics/2024/dec/20/appointment-peter-mandelson-new-uk-ambassador-to-us-divides-labour-mps) he would be making Mandelson the UK’s chief diplomat in Washington, posing a dilemma for officials at the Foreign Office, who decided