There was plenty to talk about, including Partygate, the scandal embroiling his premiership.
The Queen too may have wanted to discuss the plan to crown Camilla as Queen Consort after King Charles III accedes to the throne.
Mr Johnson last met the Queen on December 1 but held phone audiences with her on December 8 and 15 – and also rang her to apologise after it emerged his staff held two raucous parties on the eve of Prince Philip’s funeral in April last year.
The Queen suspended the weekly prime ministerial audiences just before Christmas. She returned to Windsor Castle from Sandringham on Monday.