As co-founder of the Environmental Investigation Agency (EIA) in 1984, its executive director for ten years, senior campaigner and board member for twenty five, Dave has developed, led and won campaigns with his focused strategies, persuasive documentation, team work and sheer hard work. His undercover exploits, illustrated with strong photographic images, have closely allied him with the media, his photo-spreads appearing in magazines such as LIFE, The Sunday Times, BBC Wildlife and The Telegraph Magazine.

Dave’s name is associated with many conservation successes. His published photo-spread on the plight of Kaziranga National Park in Assam, India acted as a catalyst to raising over £80,000 for the park, its forest guards and communities, further protecting the rhinos, tigers and river dolphins. His pioneering international undercover work has gained protection for a diverse range of wildlife including wild birds, whales, dolphins, elephants and their habitats.

His writing has appeared all over the world and he co-authored To Save An Elephant with colleague Allan Thornton, describing their work to secure the ivory ban in 1989. His highly successful novel Stripped - a thriller set in Borneo - was published in 2010. His ebook for the ipad Galapagos Photography was published in 2014. He is currently working on a new novel set on Ibiza.