King Charles has filmed a first-hand account concerning his battle with cancer, which will be broadcast as part of this year's annual cancer awareness campaign, organised by a leading cancer charity and a television broadcaster.
The royal household said the King would talk about his "recovery journey" as a cancer patient, in a video message on this Friday at 20:00 GMT.
The message, filmed within his London residence a fortnight ago, will stress the importance of cancer screening checks to help guarantee more people catch the condition at an initial point.
This represents a rare update on the health of the Monarch, who has been in a course of therapy since revealing his diagnosis in February 2024. Analysts suggest improbable the King will disclose his particular diagnosis.
The annual charity campaign each year collects money for scientific studies and therapies and prompts people to get health assessments to improve the chances of an prompt identification.
The King's candid approach about his illness, and living with cancer, has been designed to increase understanding and to persuade more people to get tested - and this will be escalated with this unusual direct participation.
So far the King's key philosophy to his cancer has been to keep working, upholding a hectic timetable alongside his ongoing course of care, and he appears not to have sought to be characterised by his illness.
This year has seen the King, 77, undertaking several foreign visits, such as visits to Italy and Canada, and welcoming the highest tally of foreign dignitaries to the UK for decades, which included the German president recently.
Friday evening's awareness show on the network, hosted by celebrities like Davina McCall, Adam Hills and Clare Balding, will urge people not to be frightened of getting cancer checks.
The hosts have been had experience with cancer - Davina McCall said recently she had undergone surgery for the disease, while Clare Balding was overcame the illness in the past. Presenter Hills has previously discussed his late father, who had one form of cancer and then later another illness.
The show will target the approximate millions of people in the UK who health organisations estimate are not up to date with NHS screening schemes, with an digital tool to let people see if they are eligible for screenings for several common cancers.
In an effort to demystify cancer checks and show the benefit of prompt detection there will be a direct feed from hospital departments at two Cambridge hospitals in Cambridge.
"My aim is to take the fear from health checks and show everyone that they are not on their own in this," commented one of the hosts.
Right now in the UK, there are a number of publicly available checks - for major health concerns - accessible for eligible individuals.
A recently launched lung cancer screening programme is also being gradually implemented for people at potential risk of developing the illness, focusing on people of a certain age, who currently smoke or were former smokers.
Individuals may request prostate screenings, but there is no national programme in place.
The fundraising initiative, which has collected over one hundred million pounds since 2012, is financing multiple research studies involving thousands of patients.
King Charles, in a message for attendees at a event for related organisations in earlier this year, had referred to recognising the "daunting and at times alarming reality" for cancer sufferers and their support networks.
But he stated his personal journey of managing cancer had revealed that "the most difficult times of disease can be illuminated by the kindness of others," as he commended those who cared for cancer patients.
Official sources has not made public the nature of cancer the King has, or the medical care he has received. The King's cancer was detected following he had received a medical treatment.