The BBC is preparing a special documentary titled 'Queen Elizabeth II: Her Story, Our Century' in honor of the late Queen Elizabeth II, who reigned for 70 years, the longest-reigning monarch in the history of the United Kingdom.

This documentary, which will be broadcast on what would have been the Queen's 100th birthday, will feature archive footage and new interviews exploring the most significant events of her life.

The program promises to be a moving tribute to her life and legacy, bringing together prominent figures to offer unique perspectives on the Queen and her lasting impact.

Among the participants is Sir David Attenborough, who will also celebrate his 100th birthday in May.

Attenborough, known for his work in nature documentaries and his closeness to the Queen, will share his memories and personal experiences.

In a statement to the PA News Agency, Sir David recalled his numerous interactions with the Queen, highlighting her sense of humor and her ability to connect with people.

Dame Helen Mirren, recognized for her portrayal of Queen Elizabeth II in the 2006 film 'The Queen' and in the play 'The Audience', will also participate in the documentary.

Mirren, who expressed her sadness after the monarch's death, will share her reflections on the Queen's nobility and impact.

Mirren's participation adds a special dimension to the documentary, offering a unique perspective on the Queen's figure.

Catherine Catton, head of factual entertainment and events, emphasized that the documentary will explore the life of Queen Elizabeth II through the lens of a century of change, offering an important reflection on how modern Britain has been shaped.

The documentary promises to be an intimate and revealing portrait of a key historical figure of the 20th and 21st centuries.

It is expected that the documentary will offer a complete vision of her life, from the most difficult to the happiest moments, and how she influenced society.

In addition to his participation in the documentary, the longevity of Sir David Attenborough, who shares the Queen's age, is highlighted.

Attenborough attributes his long life, in part, to his largely vegetarian diet and his purpose in life, having produced more than 100 documentaries and series throughout his career.

His dedication to conservation and environmental education has made him a national treasure.