Prince Charles
Prince Charles, the Prince of Wales and Duchess of Cornwall Camilla arrive for the second day of the Royal Ascot horse racing festival at Ascot, southern England.Reuters

When Prince Charles becomes the king, he does not want to be a mute spectator concerning matters of public affairs. Instead, he is believed to have expressed a desire to make "heartfelt interventions" in national life when the need arises.

This is in contrast to the Queen's practice of maintaining a neutral stance on politics and other public affairs. The rare instance when Queen Elizabeth II intervened on the political stage was during the Scottish independence referendum in September.

The Prince is passionate about farming, environment and conservation, and he won't be keeping his opinions to himself, as Charles reportedly feels a duty to pass on public opinion, according to The Guardian.

"He will be true to his beliefs and contributions," said a well-placed source. "Rather than a complete reinvention to become a monarch in the mould of his mother, the strategy will be to try and continue with his heartfelt interventions, albeit checking each for tone and content to ensure it does not damage the monarchy. Speeches will have to pass the following test: would it seem odd because the Queen wouldn't have said it or would it seem dangerous?"

A monarch is expected to be someone above politics and controversies, and Prince Charles' interference can do more harm than good, as it could damage his future role as king. And although Charles understands the need to exercise caution when it comes to voicing his opinion, chances of him doing that are remote, said Patrick Holden, an organic farmer, friend of the prince and adviser to him on sustainability.

"He is part of an evolving monarchy that is changing all the time. He feels these issues are too serious to ignore."

Meanwhile, a Clarence House spokeswoman refused to address the speculations on the Prince of Wales's future role as king, but added that Charles was dedicated to working towards causes that would make a difference for the better.

"The Prince of Wales cares deeply about this country and has devoted most of his working life to helping individuals and organisations to make a difference for the better – and not for his personal gain. He takes an active interest in the issues and challenges facing the UK and around the world through his own work and that of his charities," the spokeswoman said.