They also vehemently denied that William has been drawn closer to his faith since his family’s health crisis, saying: “No change of course there.”

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The Princess of Wales is ‘more interested’ in her faith since she was diagnosed with cancer, according to a royal insider.

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They added: “He is a modern young man, and I think he gets embarrassed by certain aspects of ceremonial and religion”.

Prince William has reportedly committed to “observe all his constitutional obligations to the Church of England” when he ascends the throne.

In the new chapter added to his book, Hardman wrote that William would not “suddenly become a regular worshipper or feign an enthusiasm for something that he does not feel personally, however bleak the situation”.

He added that William has historically not “shared his father’s interest in faith and spiritualism, nor the late Queen’s solid devotion to the Anglican communion”.

It was even suggested that some royal officials thought the heir to the throne “lacks the odd wise old consigliere who might step in to point out a potential misstep.”

Hardman writes that though the heir to the throne’s statements were “perfectly benign,” they were also “not entirely in line with Government policy”.

Prince Harry described King Charles as “deeply religious” in his memoir Spare. The monarch is well known to follow his faith closely, much like his late mother, Queen Elizabeth.

When he took on the role of head of the Church after Queen Elizabeth’s death in September 2022, Charles pledged to protect the multiple faiths of a diverse Britain “no less diligently” than Christianity, which he follows.