Stephen Tindale was the Executive Director of Greenpeace in the United Kingdom until 2005. He is the co-founder of the organisation Climate Answers, and Associate Fellow at the Centre for European Reform.

Tindale is noted for his recent U-turn on nuclear power. Along with three other persons who have been involved with the environmental movement, Chris Smith, Mark Lynas and Chris Goodall, he is now lobbying in favour of nuclear power. He considers that the need to overcome the dangers of rising carbon emissions and subsequent global warming requires a rethinking of anti-nuclear positions amongst the environmental movement. In addition to current nuclear technology, Tindale supports the research and development of the thorium fuel cycle in molten salt reactors to reduce nuclear waste output and increase safety.

His past roles have included Senior Research Fellow on environment and energy at the Institute for Public Policy Research.

Chicco Testa is an Italian manager. He was born in Bergamo on January 5, 1952 and graduated in philosophy at the Università Statale in Milano (1976). He lives in Rome and he has two sons.

From 1980 to 1987 Testa was National Secretary and then National President of Legambiente environmentalist association. As such, Testa leads the environmentalist mobilization in Italy after the Chernobyl disaster, reaching its high in the manifestation of May 10, 1986 with more than 200,000 people. More than 1 million signatures are gathered to present an anti-nuclear referendum, passed in 1987, following which Italian nuclear plants were decommissioned.

From 1987 to 1994 for two legislatures, he was elected to the Italian Chamber of Deputies in the lists of the Italian Communist Party (PCI) in 1987 and of the Democratic Left Party (PDS) in 1992, seating in the parliamentary commission for the environment and the territory.

From 1994 to 1996 he was Chairman of the Board of ACEA (Rome’s Electricity and Water Co.)

Mary Therese Winifred Robinson (née Bourke) (Irish: Máire Mhic Róibín; born 21 May 1944) served as the seventh, and first female, President of Ireland from 1990 to 1997, and the United Nations High Commissioner for Human Rights, from 1997 to 2002. She first rose to prominence as an academic, barrister, campaigner and member of the Irish Senate (1969–1989). She defeated Fianna Fáil's Brian Lenihan and Fine Gael's Austin Currie in the 1990 presidential election becoming, as an Independent candidate nominated by the Labour Party, the Workers' Party and independent senators, the first elected president in the office's history not to have had the support of Fianna Fáil.

She is widely regarded as a transformative figure in the presidency of Ireland, who revitalised and liberalised a previously conservative, low-profile political office. She resigned the presidency two months ahead of the end of her term of office to take up her post in the United Nations. Robinson has been Honorary President of Oxfam International since 2002 and of the European Inter-University Centre for Human Rights and Democratisation EIUC since 2005, she is Chair of the International Institute for Environment and Development (IIED) and is also a founding member and Chair of the Council of Women World Leaders. Robinson was a member of the European members of the Trilateral Commission.

Peter Mather (born 9 September 1953) is a British fencer. He competed in the individual and team sabre events at the 1976 Summer Olympics.

David Lowry is a research consultant with specialist knowledge of UK and EU nuclear and environment policy.

Lowry is a contributing author to a 2007 book on British energy choices entitled Nuclear or Not? In 2001, Lowry was presented with a special award for education at the Nuclear-Free Future Foundation annual awards. In 1987, Lowry was awarded a PhD on nuclear decision-making by the Open University. He previously studied at the State University of New York (1978–79) and the London School of Economics (1975–78).

Lowry has published a large number of articles in a range of magazines since 1980. In 1991 he co-authored a book, The International Politics of Nuclear Waste, covering France, Germany, Sweden, UK and US, published by Macmillan Press. His research and advocacy on nuclear and environmental issues has received extensive media coverage.