As Sir David Attenborough celebrates his 100th birthday, we bring together conservationists and film-makers to discuss the impact of his long career, and the influence he has had on how we think about nature. We hear how his tv programmes and books have reached audiences around the world and the inspiration they have provided. Wendy Kirorei describes how growing up in Kenya, Sir David’s programmes were shown constantly on television, and led her to become a wildlife film-maker. “My dream was to do my first documentary in the Maasai Mara purely influenced by watching a lot of his work growing up.”