King Charles smiled and waved as he was spotted on his first public outing since his cancer diagnosis.
The King has been residing on his Sandringham Estate in Norfolk since returning from London for a brief meeting with his son, Prince Harry.
Charles walked with his wife, Queen Camilla, outside St Mary Magdalene Church as he attended a service in Sandringham.
Around 100 well-wishers gathered around the gates of the private estate in Norfolk to see the King but were not allowed in as the grounds are closed until Easter.
Charles attends church in Sandringham today with Camilla
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It comes after the King released a heartfelt message of thanks to the public for all the support he received following his cancer diagnosis.
On Monday, Buckingham Palace announced that the King has been diagnosed with a “form of cancer,” but did not disclose what type.
The King walked along the gravel path to the church and was greeted by Rev Canon Dr Paul Williams before walking into the church.
The Queen wore a black hat trimmed with fur for the service today paired with a long, white coat. She matched the outfit with long, black-heeled boots.
Charles and Camilla waved at the crowds gathered at the estate
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Both the King and the Queen prepared for the dull weather carrying large umbrellas.
King Charles regularly attends church on Sundays when he is staying at his home in Norfolk.
It is tradition for members of the Royal Family to walk from Sandringham House to St Mary Magdalene Church on Christmas Day in front of cheering crowds.
In a message posted on The Royal Family's official website, the King states: “I would like to express my most heartfelt thanks for the many messages of support and good wishes I have received in recent days.
Charles was greeted by Reverend Canon Dr Paul Williams
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Camille wore a black and white outfit with a fur trimmed hat
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“As all those who have been affected by cancer will know, such kind thoughts are the greatest comfort and encouragement.”
Charles is now being treated as an outpatient as he carries on working from the peace of Sandringham Estate.
In the statement from Buckingham Palace, it said: “His Majesty will continue to undertake State business and official paperwork as usual.”
The King is expected to take daily walks around the grounds of Sandringham where he can take in the healing effects of his eco-diverse garden.