The SpaceX head has been advised to not seek the same over his drug use and contacts with foreign nationals

The space entrepreneur Elon Musk is unlikely to receive government security clearances if he so applied, even as his SpaceX launch company blasts military and spy agency payloads into orbit, according to a report on Monday.

The billionaire, a close ally of Donald Trump, who is set to join the incoming administration as an efficiency expert and recently became the first person to exceed $400bn in self-made personal wealth, is reported by the Wall Street Journal to have been advised by SpaceX lawyers not to seek highest-level security clearances owing to personal drug use and contacts with foreign nationals.