What's on

Sarah Pickup, Deputy Chief Executive, Local Government Association Professor Martin Green, Chief Executive, Care England Ray James, President, Association of Directors of Adult Social Services Lord Smith, Leader, Wigan Metropolitan Borough Council, and Sir Howard Bernstein, Head of Paid Service, Greater Manchester Combined Authority David Slack, Managing Director, Somerset Clinical Commissioning Group Neil Tester, Director of Policy and Communications, Healthwatch England Elliott Dunster, Interim Group Head of Public Affairs, Policy and Research, Scope Geoff Heyes, Policy and Campaigns Manager (Mental Health Services), Mind

Rt Hon Stephen Crabb MP, Secretary of State for Wales Rt Hon Theresa Villiers MP, Secretary of State for Northern Ireland Rt Hon David Mundell MP, Secretary of State for Scotland

John Manzoni, Chief Executive of the Civil Service and Permanent Secretary, Cabinet Office Sally Collier, Chief Executive, Crown Commercial Service

Dr Doug Parr, Chief Scientist, Greenpeace UK Tom Greatrex, CEO, Nuclear Industry Association John Warden, CEO, Nuclear Institute Sir William McAlpine, President, Supporters of Nuclear Energy Neville Chamberlain CBE, Member, Supporters of Nuclear Energy Professor Gordon MacKerron, University of Sussex Dr Philip Johnstone, University of Sussex

Dr Hilary Newport, Director, Campaign to Protect Rural England, Kent Branch Matthew Webb, Chair, Stanford Parish Council John Keefe, Director of Public Affairs, Eurotunnel Matthew Balfour, Cabinet Member for Environment and Transport, Kent County Council David Monk, Leader, Shepway District Council Natalie Chapman, Head of Policy for South East England, Freight Transport Association

Claudia Harris, Chief Executive, Careers and Enterprise Company Joe Billington, Director, National Careers Service Sean Harford, National Director, Education, Ofsted

Rt Hon Peter Riddell CBE