King Charles’ cancer could be “more dangerous” than the public has “been led to believe”, according to a royal expert.

The King revealed he had cancer at the start of February, although the type of cancer has not been confirmed to the public.

Buckingham Palace confirmed the King doesn’t have prostate cancer but that the disease was discovered while the King was being treated in hospital for an enlarged prostate.

The King is thought to have started his succession planning according to royal expert and author Tom Quinn who spoke to The Mirror.

South Wales Guardian: It's thought that succession planning has begun and that it is highly secret, according to the royal expertIt's thought that succession planning has begun and that it is highly secret, according to the royal expert (Image: Lucy North/PA Wire)

King Charles' cancer diagnosis could be "more dangerous than we have been led to believe"

Tom told the newspaper: "Charles is also aware that, as future king, William is at the heart of the succession planning that is taking place right now – officials had assumed Charles would remain healthy at least into his mid-eighties before succession planning would need to begin but in fact it has now begun and indicates perhaps that Charles’ cancer is more dangerous than we have been led to believe.

"Succession planning is highly secret and no one trusts Harry to be part of it for the simple reason that if he feels in any way slighted or not given what he feels he deserves he will run straight to the media."

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The comments made by Tom follow claims Prince Harry is happy to help the Royal Family following the King’s cancer diagnosis.

The Mirror adds that the Duke of Sussex plans to come to the UK soon.

After visiting his father in the UK this month following his cancer diagnosis, Harry said he was “grateful” to have seen him and said “I love my family” during a Good Morning America interview.