It’s a delicate balancing act for Buckingham Palace between transparency and King Charles' privacy.  

The monarch is being treated for cancer, discovered during a separate procedure.  

The King and Queen Camilla have been seen for the first time since the diagnosis, driven from Clarence House to Buckingham Palace where it's believed they flew to Sandringham. 

Prince Harry's arrived in the UK.  

Royal correspondent Victoria Arbiter told Mike Hosking that it's not known what cancer he has or what treatment he's getting, and more information usually leads to more speculation.  

She says if the Palace had said what type of cancer he has, there'd be a litany of doctors on television talking about prognosis and life span. 

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• Length of Prince Harry's stay in UK still unknown