Retired high court judge to review Peter Mandelson’s vetting process

Exclusive: Adrian Fulford will also examine wider national security vetting system after Foreign Office controversy

A retired high court judge is expected to review Peter Mandelson’s vetting process and the wider national security vetting system.

The review, commissioned by Downing Street, comes after a Guardian investigation revealing that security officials decided Mandelson should not receive developed vetting clearance, but were overruled by the Foreign Office to allow him to become US ambassador.