On January 28, 2026, Windsor Castle made history by hosting its first-ever film premiere inside a royal residence. The event celebrated the world premiere of Finding Harmony: A King’s Vision, a new documentary narrated by Kate Winslet that explores King Charles III’s lifelong philosophy of harmony with nature, culture, and community. The screening, held in the grand Waterloo Chamber, drew an extraordinary mix of royalty, Hollywood A-listers, and environmental advocates, turning the historic venue into a glittering cinema for one night.
King Charles and Queen Camilla led the arrivals, welcoming guests to the castle for what was described as a “royal premiere.” Joining them were members of the royal family, including Sophie, Duchess of Edinburgh, and the Duke and Duchess of Gloucester, who helped host the VIP reception. The evening carried deep personal significance for the King, who has championed environmental causes for over five decades — a passion that forms the heart of the film.
The guest list was a who’s-who of British and international talent. Kate Winslet, who narrated the documentary, arrived looking radiant and spoke warmly about the project during the evening. She praised the King’s “great vision and foresight” in protecting the natural world, calling the film “a lifetime in the making.” Dame Judi Dench, one of Britain’s most revered actresses, attended with her partner David Mills, bringing her signature elegance and quiet support for the monarch’s initiatives. Sir Kenneth Branagh, another titan of stage and screen, was also present, adding to the night’s sense of occasion.
Stanley Tucci and his wife Felicity Blunt brought their trademark sophistication, while Benedict Cumberbatch and his wife Sophie Hunter arrived together, the actor’s thoughtful presence underscoring his long-standing interest in environmental and cultural causes. Music legend Sir Rod Stewart and Lady Penny Lancaster rounded out the high-profile attendees, their star power complementing the evening’s blend of royalty, cinema, and conservation.
Other notable guests included astronauts, Formula 1 drivers, and figures from the world of science and philanthropy who have supported The King’s Foundation — the charity behind the film. The diverse crowd reflected the documentary’s central message: harmony is achieved through interconnectedness across people, nature, and cultures.
The film itself traces King Charles’s environmental journey from his earliest speeches in the 1970s to his current global advocacy. Shot over the course of a year with a multimillion-pound budget, it features stunning visuals of natural landscapes, interviews with experts, and personal reflections from the King himself. It emphasizes the idea that humanity must see itself as part of nature — not separate from it — and explores practical solutions through sustainable practices and community-led initiatives.
After the screening, guests moved to the Grand Reception Room for a reception hosted by the King and Queen. The atmosphere was warm and celebratory, with conversations flowing about the film’s message and the importance of collective action on environmental issues. The premiere was widely praised as a fitting tribute to the King’s vision — and a powerful reminder of the role culture and storytelling can play in raising awareness.
The event’s historic nature added extra resonance. Windsor Castle had never before hosted a film premiere, making the occasion a blend of royal tradition and contemporary relevance. The Waterloo Chamber, with its grand portraits and historic significance, provided a majestic setting that elevated the screening into something truly special.
For Kate Winslet, narrating the documentary was a deeply personal project. She has long been involved with environmental causes and spoke movingly about the King’s influence on her own thinking. Dame Judi Dench, whose presence at royal events is always warmly welcomed, brought her characteristic grace and gravitas to the evening. Benedict Cumberbatch, Stanley Tucci, and Sir Kenneth Branagh — all respected figures in film and theater — lent their support to a cause that transcends entertainment.
The premiere also highlighted the growing intersection of royalty, celebrity, and environmental activism. King Charles has long used his platform to advocate for sustainability, and the star-studded turnout demonstrated the broad appeal of his message. Guests left inspired, with many sharing their reflections on social media in the days that followed.
As Finding Harmony: A King’s Vision prepares for its global release on Prime Video on February 6, 2026, the Windsor Castle premiere will be remembered as a night when Hollywood met royalty in service of a shared vision. Kate Winslet’s narration, combined with the presence of Dame Judi Dench, Benedict Cumberbatch, Stanley Tucci, and others, made it a truly unforgettable occasion — a celebration of harmony in every sense.
