King Charles's new film shows his continued frustration with lack of action

It is thought to be the first time a star-studded film premiere has been held inside the oldest and largest occupied castle in the world - built shortly after the Norman conquest.

Finding Harmony: A King's Vision tells the story of His Majesty's lifelong dedication to environmentalism, regeneration and creating a way of life where humans live in harmony with the natural world.

In the film, The King said: "It all boils down to the fact that we are actually nature ourselves, we are a part of it, not apart from it, which is really how things are being presented for so long.

"Maybe, by the time I shuffle off this mortal coil, there might be a little more awareness… of the need to bring things back together again."

Perhaps this is The King's way of spotlighting what he wants his legacy to be, and a chance to look back on over 50 years of environmental activism.

In December, King Charles announced the regularity of his cancer treatment would be significantly reduced in the new year, moving to a "precautionary phase" - royal sources insist this is very positive news.

When King Charles was a younger Prince of Wales, unfavourable press coverage, sometimes openly mocking him, was commonplace.

He pioneered organic farming, leading to many making fun of his now infamous comment about "talking to plants".

Many in positions of power dismissed his plans, particularly architects irritated by his strong criticism of brutalist designs of the post-war era.

During the film, His Majesty looks back at old speeches, and the subsequent fallout from them, speaking up for the science behind biodiversity loss, deforestation and climate change.

King Charles was speaking about these issues long before they became mainstream, but it was clear just how frustrated he still is by the state of the planet today.

His Majesty said: "It's rapidly going backwards. I've said that for the last 40 years, but anyway, there we are. So, that's why I get a bit, anyway… I can only do what I can do, which is not very much.

"People don't seem to understand it's not just climate that's the problem, it's also biodiversity loss...

"So, we're actually destroying our means of survival, all the time. To put that back together againis possible, but we should have been doing it long ago. We've got to do it as fast as we can now."

It appears His Majesty has little regret for being as outspoken as he was on environmental issues, a course he "wasn't going to be diverted from" when he became King.

Much of the documentary focused on the success of The King's Foundation's Dumfries House, now the headquarters for the charity.

In 2007, the then-Prince made the financially risky decision to purchase the £45million country house and its contents, personally guaranteeing a £20million loan.

The film shows how the house has transformed the local area, keeping His Majesty's vision of harmony as a core value.

Kristina Murrin CBE, who takes part in the film, told GB News: "Dumfries House was located in one of the most deprived parts of the UK. It had been decimated by the loss of coal mining and fishing.

"And I think what we've tried to do there was experiment and see can we regenerate an entire community? And it's been a huge success.

"We are the second biggest employer in the area, now economic output has grown. The number of young people staying in the area is much higher, so we are very proud of what we've done there."

The King's Foundation now trains over 10,000 people a year with the skills needed to find employment.

It also hosts regular events for older people to help combat loneliness and social isolation.

The King said: "[Dumfries House] is a great example of how you can create new business and jobs in the green economy."

The film also explores global projects inspired by the work of Dumfries House, with filming taking place over seven months last year across four continents.

Amazon Prime was chosen, in part, for its global reach of over 200 countries.

On the announcement for the film, His Majesty said: "This film will, I hope, demonstrate just some of the remarkable work that others are doing to put Harmony into practice right around the world, from the forests of Guyana to sustainable communities in India - and, closer to home, through the work of my King's Foundation at Dumfries House and Highgrove."

Speaking of Highgrove, His Majesty reveals the unfortunately named red Duke of York potatoes growing in his Gloucestershire home's gardens are perfect to get a crispy skin on a jacket potato.

He is also filmed collecting several eggs from his chickens, living at Cluckingham Palace in the grounds.

Archive footage of Prince William, both as a young boy and a teenager, features throughout the 90-minute film, perhaps a nod to the next generation of environmental stewards.

The current Prince of Wales continues to work on finding and scaling up solutions to repair the planet through his annual Earthshot Prize.

This was a very different type of royal documentary; there were no palaces or gold carriages.

Instead, it was a deeply personal exploration of The King's vision and his desire to inspire action around the world.

Finding Harmony: A King's Vision is narrated by Academy Award-winning actor and King's Foundation Ambassador Kate Winslet, and premieres globally on Prime Video on February 6.

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