Following the broadcast, Cancer Research UK reported a sharp rise in interest in the new screening tool. According to the charity’s chief executive, Michelle Mitchell, around 100,000 people have already visited the checker to seek information about cancer screening. Most of those visits occurred after King Charles spoke publicly about his diagnosis during the live Stand Up To Cancer programme.

Michelle Mitchell said the response highlights the power of open and honest conversations about cancer, especially when they come from a figure as widely respected as the King. She noted that many people feel unsure about which screenings apply to them or what happens once they take the first step. The new checker was designed to remove that uncertainty and make the process easier to understand.

She added that taking just a few minutes to find out which screenings are available could make a meaningful difference to someone’s health and, in some cases, could save lives.

Buckingham Palace later confirmed that King Charles has been deeply moved by the reaction to his message and by the number of people who have taken action as a result.