The King and Queen's state visit to the Vatican has been postponed by mutual agreement as the Pope recovers from illness, Buckingham Palace said.
The pope, 88, arrived home to the Vatican on Sunday after spending five weeks in hospital battling a life-threatening bout of pneumonia.
A statement said, "medical advice has now suggested that Pope Francis would benefit from an extended period of rest and recuperation".
Please use Chrome browser for a more accessible video player
The King and Queen's tour of Italy is understood to still be going ahead, however, there are expected to be some changes to the programme.
The trip from 7-10 April was set to celebrate the papal jubilee and the relationship between the Catholic Church and the Church of England.
"Their Majesties send The Pope their best wishes for his convalescence and look forward to visiting him in The Holy See, once he has recovered,'' the palace said in a statement.
Analysis: Why the papacy will never be the same again
Pope Francis, who had been at Rome's Gemelli hospital since 14 February, was discharged on Sunday.
Before he left, he appeared on a public balcony at the medical centre to bless the crowds.
"I see this woman with the yellow flowers. Brava!" said Francis. He waved, gave a thumbs up and a sign of the cross before being wheeled back inside.
It brought an end to a 38-day hospital stay, the longest of Francis's 12-year papacy and the second-longest in recent papal history.
Last week, the Palace announced the trip to the Vatican would go ahead despite the pontiff's continued illness.
This breaking news story is being updated and more details will be published shortly.
Please refresh the page for the fullest version.
You can receive breaking news alerts on a smartphone or tablet via the Sky News app. You can also follow us on WhatsApp and subscribe to our YouTube channel to keep up with the latest news.