Former US ambassador Peter Mandelson has been released on bail after his arrest over claims he committed misconduct in public office during his friendship with the convicted child sex offender Jeffrey Epstein. Police have been investigating allegations that he leaked Downing Street emails and market-sensitive information to the disgraced US financier during his time as business secretary. Mandelson has denied any wrongdoing. Lucy Hough speaks to the Guardian’s head of national news Archie Bland – watch on YouTube