The Secret (and Unusual) Code Name Behind King Charles's Health Scare Revealed by Royal Insider
"I'm not sure even His Majesty knows," a source said of the plan.


King Charles shocked the world when he announced he'd been diagnosed with an undisclosed form of cancer in February, and while royal watchers grappled with the news, "ashen-faced" courtiers were left to come up with a plan. In a new report from the Daily Mail on Dec. 20, it's been revealed that the palace created a secret code name unknown to anyone—perhaps even The King himself.
Royal editor Rebecca English revealed the details that played out behind the scenes earlier this year, writing that Buckingham Palace staffers' "role was to devise a plan to support The King, and reassure an anxious nation."
Royals love a good code name; Queen Elizabeth's death plan was called "Operation London Bridge" and The King's is said to have been upgraded to the same name. But in the case of his cancer battle, English shared that it "was codenamed 'Operation Delphinium'—The King's favorite flower."
The name makes sense for avid gardener Charles, but according to a royal source, the monarch might've been unaware that the flower-themed code even existed.
"I'm not sure even His Majesty knows [that's what it was called]," the insider told English.
The King looked in good spirits as he carried out his last public event before Christmas on Dec. 20.
However, the Daily Mail reported that any plans regarding his health were "firmly led by The King himself," noting that His Majesty wanted to "be as open as possible" with the public.
"The King hoped that if he could be honest, it may help others in the same position," a royal source told English, adding King Charles "wanted people to know it is possible to keep living a full and active life even while undergoing treatment."
Stay In The Know
Get exclusive access to fashion and beauty trends, hot-off-the-press celebrity news, and more.
Earlier Friday, palace sources announced that The King's cancer treatments would continue into the New Year, stressing that his health was still on the right path. His Majesty—who paid a visit to Walthamstow, London before heading off to Sandringham for Christmas—gave one local faith leader a quippy three-word response when asked about his health.
"I'm still alive," he joked, according to the Mirror.
As for 2025, English wrote that the New Year looks optimistic for The King and Queen, with a schedule of overseas visits and plenty of local engagements planned. A royal source noted, "They have come through the worst and both are stronger for it."
Kristin Contino is Marie Claire's Senior Royal and Celebrity editor. She's been covering royalty since 2018—including major moments such as the Platinum Jubilee, Queen Elizabeth II’s death and King Charles III's coronation—and places a particular focus on the British Royal Family's style and what it means.
Prior to working at Marie Claire, she wrote about celebrity and royal fashion at Page Six Style and covered royalty from around the world as chief reporter at Royal Central. Kristin has provided expert commentary for outlets including the BBC, Sky News, US Weekly, the Today Show and many others.
Kristin is also the published author of two novels, “The Legacy of Us” and “A House Full of Windsor.” She's passionate about travel, history, horses, and learning everything she can about her favorite city in the world, London.
-
Hailey Bieber’s Just as Obsessed With This ‘90s Hair Accessory As the Rest of Us
The new mom was spotted in this Fashion Week-approved trend while running errands.
By Ariel Baker Published
-
Prince William's Love of Family Travel "Has Been Shaped" by Princess Diana's Death and Desire for a "Normal Upbringing"
"He understands his duty but also wants to make sure his family comes first."
By Kristin Contino Published
-
Now That We've Devoured 'Onyx Storm,' We're Rounding Up Everything We Know About the 'Fourth Wing' TV Show
Rebecca Yarros's bestselling romantasy series is getting the Prime Video series treatment.
By Quinci LeGardye Published
-
This Surprising Duo Has Been Called the "Most Compatible Royal Couple"
"They have had this deep love since they were both very young."
By Kristin Contino Published
-
There's Only One Person King Charles "Will Listen To" When it Comes to His Health Struggles, Per Royal Expert
The busy King will no doubt be given advice from one royal.
By Kristin Contino Published
-
Buckingham Palace Shares King Charles Health Update After Hospitalization, Reveals Italy Visit Status
The King will reportedly need a "suitable period of rest."
By Amy Mackelden Published
-
How Queen Camilla Is "Showing Her Strength" as King Charles Cancels All Plans After Hospitalization
Charles has been forced to cancel "an African spa retreat," which he planned to take with Camilla.
By Amy Mackelden Published
-
Duchess Sophie Allegedly Feels "Snubbed" by King Charles as He Refuses to Slow Down Following Hospitalization
"There should be an opportunity for Sophie to be allowed to do more," a royal expert claimed.
By Amy Mackelden Published
-
Prince Harry Wasn't Informed About King Charles's Hospitalization as Palace Didn't Want to "Cause Unnecessary Alarm"
"It looks like the duke only found out about his father's latest health update through the media."
By Amy Mackelden Published
-
Why Queen Camilla Has Been Issued a "Strict" Warning Regarding Her Meeting With the Pope
Her royal tour of Italy comes with a unique set of rules.
By Amy Mackelden Published
-
The "Impactful" Change Prince William Has Made to Royal Protocol as He "Splits" From King Charles
"It's a model you're likely to see more of," a royal source explained.
By Amy Mackelden Published