Cabinet secretary apparently advised Starmer to wait for vetting before appointing Mandelson

Documents also show US ambassadorial appointment was offered ‘higher tiers’ briefing before vetting was finalised

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The then cabinet secretary, Simon Case, appeared to advise Keir Starmer to complete security vetting for Peter Mandelson before announcing an appointment, documents reveal.

The documents released last month by the Cabinet Office as part of the disclosures over the US ambassadorial appointment also show Mandelson was offered a “higher tiers” briefing before his vetting was finalised.