As Father’s Day approaches, Royal author and expert Tom Quinn tells the Mirror: “King Charles’ birthday and Father’s Day are both a nightmare for Harry. He knows the world will be watching to see whether he is big enough to reach out to his father.

He is determined to try to ignore his troubled relationship with his father and he will certainly send a warm message. It’s easy to forget that Harry really does love his father, he just hates the fact that Charles seems always to support William when there is a family dispute.”

Harry is now facing a Father’s Day dilemma, Mr Quinvn claims, as the world will be keenly observing if he extends an olive branch to his father, King Charles. Meanwhile, according to Mr Quinn, the Duke of Sussex is even finding it challenging to arrange a call with King Charles.

Mr Quinn made the startling claim that Harry’s attempts to speak with his father have been met with reluctance. He alleged: “Harry has tried to schedule a call with his father already, but his father is prevaricating with Camilla advising against anything that might upset King Charles.”

Observations are heightened ahead of Father’s Day on June 16 followed by the King’s birthday a day after and not to forget his real birth anniversary on November 14 when he will be turning 76 – ensuring public curiosity around Royal interactions. Representatives for Prince Harry have been contacted by The Mirror for a response.