Arena host: Sarah Montague, broadcaster and presenter of Radio 4’s Today programme, former presenter of Newsnight, Breakfast with Frost and BBC World’s HARDtalk, as well as reporting on the News Channel.

• Science & technology: waiting for the lifeboat
• What makes a sustainable community
• Selling the ‘S word’: the role of the media
• How to avoid power cuts in the UK 
• Environment first – profit second: living within our means
• The unbearable redundancy of things
• Green is beautiful: towards a new aesthetic

Chris Goodall, Author of The Green Guide for Business, How to Live a Low-Carbon Life, Ten Technologies to save the Planet, and  Ten Technologies to Fix Energy and Climate: columnist for the Independent on Sunday, The Sunday Times, and The Guardian.

Professor David Fisk, Prof Engineering for Sustainable Development, Dept of Civil and Environmental Engineering , Imperial College London and  formerly Chief Scientist and Policy Director in the Department of Energy.

David Kennedy, CEO of the Committee on Climate Change, formerly responsible for energy strategy at the World Bank, and infrastructure investment projects at the European Bank for Reconstruction and Development.

Dr Rachel Armstrong, Teaching Fellow at the Bartlett School of Architecture, medical doctor with qualifications in general practice, multi media producer, sci-fi author and arts collaborator, writer on post-human evolution and alien phenomena, working at the intersection of art, science and technology

Peter Head, Director, Arup, responsible for Planning and Integrated Urbanism, project director for the planning and development of the Dongtan Eco-city near Shanghai, appointed as Independent Commissioner on the London Sustainable Development Commission in 2002.

Wilfred Emmanuel Jones, entrepreneur, farmer, originator of the Black Farmer food label, campaigner for rural affairs and the betterment of young people from inner city communities, Conservative parliamentary candidate.

Rt Hon David Blunkett MP, former Secretary of State for Education and Employment, and Home Secretary.  Since leaving the Front Bench David has continued to inform government policy on the voluntary sector, social mobility and affordable credit.

Julian Baggini, philosopher and the author of various books including Everytown: an inquiry into the English mind,  co-founder and editor of The Philosophers' Magazine, contributor to The Guardian, The Independent, The Observer, and is a regular guest on BBC Radio 4’s  In Our Time.

Chair: Andrew Neil, presenter of live political programmes The Daily Politics, and This Week, former editor of The Sunday Times, and founding Chairman of Sky TV.

Eve Pollard, journalist, novelist, biographer, formerly launch editor-in-chief of Elle magazine in the US, and only the second female editor, in modern times, of a national newspaper in the UK, editing the Sunday Mirror from 1987-1991 and the Sunday Express from 1991-1994.

Alastair McGowan, Impressionist, comedian and actor, environmental campaigner, ambassador to WWF-UK, patron of the urban tree-planting charity 'Trees for Cities'.

Peter Bazalgette, non-Executive Chairman of two of Sony’s television divisions in the UK, former Chief Creative Officer of Endemol, responsible for devising several internationally successful TV formats, such as Ready Steady Cook and Changing Rooms. He also brought Big Brother to the UK.

James Woudhuysen, Professor of Forecasting and Innovation at De Montfort University, Leicester, consultant, columnist, editorial board member for New Design and the Journal of Consumer Behaviour, and co author of ‘Energise!’ which argues that climate change is real, but the answer is to invest boldly in new forms of power supply, not moralise about personal consumption.

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John Naish, journalist, correspondent on The Times, and author of various titles including ‘Enough, breaking free from the world of more - a practical guide to future-proof consumption’.

Ann Pettifor, Fellow of The New Economics Foundation, author of books on debt and international finance including The Real World Economic Outlook and The Coming First World Debt Crisis.

Oliver James, Clinical psychologist, columnist, documentary producer and presenter, trustee of the National Family & Parenting Institute and of Homestart, author of several books including Britain on the Couch: Treating a Low Serotonin Society

Professor Noreena Hertz, Political economist, distinguished Fellow at Cambridge, visiting Professor at Utrecht, consultant and advisor to several businesses including Citigroup, author of IOU: The Debt Threat and Why We Must Defuse It

Stephen Bayley, Award winning author, journalist and design consultant: architecture and design correspondent for The Observer, formerly creator of the Boilerhouse project at the V&A with Sir Terence Conran, became Chief Executive of the Design Museum in London, and for a period was the creative director of the exhibition at the Millenium Dome.

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Sir Terry Farrell, Partner, Farrell’s, leading architect and urban designer, he has completed iconic, award-winning buildings and masterplans in cities including London, Edinburgh, Manchester, Hong Kong and Beijing. In 2007 he was appointed by the Government as design champion for the Thames Gateway Parklands, and in 2008 as lead on design issues on the Mayor's Outer London Commission.

CJ Lim, founding director of Studio 8 Architects, a multi-disciplinary and international award-winning practice in architecture, landscape and urban design, Professor of Architecture and Cultural Design at the Bartlett, University College London, winner of the Royal Academy of Arts’ Grand Architecture Prize, and author of “Smartcities + Eco-warriors”.

Will Alsop, International Principal at Will Alsop at RMJM, Stirling prize winner, responsible for several distinctive and controversial modernist buildings distinguished by their use of bright colour and unusual forms. While Alsop has won praise from some critics and fans of avant-garde architecture, he has also faced criticism from fellow architects and some segments of the general public.

Sunand Prasad, Partner, Penoyre & Prasad, immediate past President, RIBA, founder of the RIBA’s Constructive Change group, former VP for RIBA Policy & Stratgy, and founding Commissioner for CABE.