Kate Winslet, who narrates Finding Harmony: A King's Vision, said the film had been "a lifetime in the making" as she praised the King's "great vision and foresight". Lady Stewart (Penny Lancaster) also wore a King's Foundation brooch, while Sir Rod sported a pair of bee cufflinks. © Getty Images Kate Winslet narrated the documentaryRoyal aides describe the film as "not a conventional royal documentary" and one which they hope audiences will find "genuinely fascinating and revealing about King Charles the monarch, King Charles the man and King Charles the environmental missionary." The film also shows footage of Charles fishing with a young Prince Harry and bird watching with young Prince William. © Getty Images Charles was joined by over 200 guestsAfterwards, guests headed into St George’s Hall for a champagne reception.