King Charles "remains wholly positive about his treatment", Buckingham Palace has said, after he was diagnosed with cancer.
The 75-year-old monarch had recently been admitted to hospital because of an enlarged prostate, although the Palace said he does not have prostate cancer.
In a briefing, the Palace said: “His Majesty has been treated for benign prostate enlargement. It was during this intervention that a separate issue of concern was noted and subsequently diagnosed as a form of cancer. This second condition will now receive appropriate treatment."
No further details are being shared at this time, it added.
With the news announced this evening, sparking a wave of well-wishers sending their best to the Royal Family, we have compiled several times King Charles put a smile on residents' faces while visiting the Watford area.
YMCA Charter Place - 1978
King Charles visited Watford in February 1978 to open the new YMCA in Charter Place, which is now an core site in the town centre.
Around 5,000 people gathered in the high street to see the then-prince during his visit.
He also had lunch in the town hall as part of the Queen’s Silver Jubilee Appeal Fund.
Around 450 people also paid £10 each to attend the lunch with His Majesty, which included a melon boat, roast beef sirloin, and a Bavarian raspberry torte.
WENTA business centre - 1986
The King also visited the town in February 1986 when he opened the Watford Enterprise Agency's first business Centre in Colne Way in his role as the Chairman of Business in the Community.
WENTA held an official reception in the café before the then-prince went on a half-hour tour of the business centre.
Purcell School for Young Musicians - 1998
More recently, His Majesty paid a visit to the Purcell School for Young Musicians in 1998 to officially open its campus in Bushey.
In 2003, he also accepted the the UNESCO Mozart Gold Medal for Outstanding Contribution To Arts Education on behalf of the school.
The King remains the Purcell School's Royal Patron, having renewed this role in 2018, and he described it as "an extraordinary institution with a very special place in my heart" in 2012.
Yavneh College - 2017
Watford is not the only place King Charles has visited in south Hertfordshire.
In 2017, Yavneh College in Borehamwood was recognised for its work in the community by chief rabbi Ephraim Mirvis, who invited His Majesty to visit the school.
The then-Prince of Wales received a guided tour, where he was invited to make a balloon crown by rabbi Avrohom Zeidman, who works for a charity which provides gifts for children with special needs, and packed a box of food for Tu B'Shevat, the Jewish New Year of the Trees.
BBC Elstree Centre - 2022
And most recently, King Charles visited the BBC Elstree Centre with Queen Camilla in 2022.
The couple visited the BBC EastEnders set to film some scenes to mark Queen Elizabeth II's Platinum Jubilee.
They were also given a tour of the location, receiving a glimpse behind the scenes of the BBC soap.
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