Former British Prime Minister Boris Johnson says in his memoir that he "had known for a year or more" that Queen Elizabeth II had bone cancer.

Former British Prime Minister Boris Johnson has controversially broken royal protocol and claimed in his upcoming memoir that Queen Elizabeth II was suffering from bone cancer before her death.

Royal reporter Robert Jobson disclosed details in his book, “Catherine, the Princess of Wales: A Biography of the Future Queen,” that Elizabeth II felt “terribly frail” owing to a battle with a type of bone marrow cancer known as myeloma.

Late Queen Elizabeth II had a form of bone cancer in her final years, former British Prime Minister Boris Johnson claimed in his memoir.

Boris Johnson's decision to reveal the late monarch's diagnosis is likely to raise eyebrows at Buckingham Palace.

In the months before Queen Elizabeth II died, Buckingham Palace said virtually nothing about her health challenges other than that she was suffering from “mobility issues.” Her death certificate said that she died only of “old age” aged 96.

Former British Prime Minister Boris Johnson is set to release his memoirs, which promise to reveal startling information not just about his own life but also about the British royal family. In light of ongoing health concerns within the royal household,

Britons are eagerly awaiting the release of former Prime Minister Boris Johnson's autobiography. The politician has included an extensive section about Queen Elizabeth's illness, which he says she struggled with in the final years of her life.