David Cadman

David Cadman is a Quaker writer. He has held a number of professorial chairs and is now a Visiting Professor at University College London and the University of Maryland. He is a Professor of Practice at the University of Wales Trinity St. David. He is a Trustee of The Prince's School of Traditional Arts and a Fellow of The Temenos Academy, of which His Royal Highness is Patron.

David Cadman's recent publications include Speeches and Articles 1968-2012, of which he was co-editor.

This is a collection of speeches and articles of The Prince of Wales, published by the University of Wales, Love Matters, published by Zig Publishing, 2014, Finding Elsewhere, a collection of stories for our time, published by Zig Publishing, 2015 and Why Love Matters, of which he was co-editor, published by Peter Land, 2016. His work can be found at www.lovematters.uk.com.

Tony Juniper

Tony Juniper is an independent sustainability and environment adviser, including as Special Advisor with the Prince of Wales's International Sustainability Unit , Fellow with the University of Cambridge Institute for Sustainability Leadership and as co-founder of sustainability consultancy group Robertsbridge. He is President of the Wildlife Trusts, President of the Society for the Environment and a trustee of Fauna and Flora International and Resurgence-Ecologist.

Juniper speaks and writes widely on conservation and sustainability themes and is the author of many books, including the multi-award winning best-seller What has Nature ever done for us? published in 2013. He began his career as an ornithologist, working with Birdlife International. From 1990 he worked at Friends of the Earth, initially leading the campaign for the tropical rainforests, and from 2003-2008 was the organisation's executive director. From 2000-2008 he was Vice Chair of Friends of the Earth International. Juniper was the first recipient of the Charles and Miriam Rothschild medal (2009) and was awarded honorary Doctor of Science degrees from the Universities of Bristol and Plymouth (2013). His latest book, What is really happening to our planet?: the facts simply explained, will be published in June 2016.

Website: www.tonyjuniper.com, Twitter: @tonyjuniper.com

John Sauven

John Sauven is the Executive Director of Greenpeace UK. With a background in forests he was instrumental in getting protection for the Great Bear temperate rainforest in Canada. It was an epic battle between logging companies, timber traders and their retail customers in Europe and North America.

John Sauven co-ordinated the international campaign to secure a moratoria on further destruction of the Amazon by soya producers and later similar tactics were used to get a cattle moratorium. Similar tactics were used elsewhere to tackle the drivers of deforestation including for paper and palm oil in Indonesia. Ultimately it changed the supply chains of many of the world's biggest corporations. It was one of Greenpeace's most successful campaigns to protect large areas of the world's last intact rainforests providing both climate and biodiversity protection as well as local peoples livelihoods. In 2010 John Sauven started the campaign to protect the Arctic from oil exploration. It turned into a heroic battle first with Russia's Gazprom and then Shell. In 2015 Shell pulled out of the Arctic.