12:03

According to the Court Circular, the Queen last saw Boris Johnson when he had his weekly audience with her on 11 March. Since then his weekly audience with her has been conducted by telephone.

A spokesman said:

Her Majesty the Queen remains in good health, The Queen last saw the Prime Minister on March 11 and is following all the appropriate advice with regards to her welfare.

Buckingham Palace has so far declined to comment on whether the Queen, who will be 94 next month, has been tested for Covid-19. She remains at Windsor Castle.

Prince Charles, who last saw his mother in person on 12 March, was tested on Monday and found to have coronavirus.

This is from ITV’s Chris Ship: