Evgeny Lebedev lashed out at Labour and insisted he has "nothing to hide" as the government was set to release documents about the Russian oligarch son's peerage.
The media mogul took to Twitter to say he welcomed "openness and transparency" after Labour used a Commons device to force Boris Johnson to publish security advice he received before the crossbench peer was elevated to the Lords in 2020.
It follows reports the Prime Minister overruled concerns about the appointment said to have been raised by MI5 and MI6 about the millionaire son of former KGB spy Alexander Lebedev.