Whitehall officials are weighing up ‘unprecedented’ disclosure of documents in security clearance scandal

• Starmer did not gamble with national security over Mandelson, says minister

Ministers are under growing pressure to share the documents from Peter Mandelson’s vetting process with the parliamentary committee tasked with deciding if they should be made public.

In February, MPs passed a binding parliamentary motion, known as a humble address, requiring the government to publish “all papers” relating to Mandelson’s appointment as ambassador to the US.