Panellists: Menzies Campbell, Harriet Harman, Sarah Harrison, David Mellor.

Panellists: Ian Aitken, Menzies Campbell, Jane Ewart-Biggs, Douglas Hurd.

Panellists: Kenneth Baker, Menzies Campbell, Chantal Cuer, Bryan Gould.

Panellists: Tony Benn, Menzies Campbell, Margaret Ewing, Magnus Linklater, Andrew Neil, Malcolm Rifkind.

Panellists: Menzies Campbell, Michael Howard.

Panellists: Menzies Campbell, Harriet Harman, Simon Jenkins, John Patten.

Panellists: Menzies Campbell, Malcolm Rifkind, George Robertson, Alex Salmond.

Panellists: Menzies Campbell, Robin Cook, Jean Denton, Judith Donovan.

Panellists: Menzies Campbell, Robin Cook, Ann Leslie, Nicholas Soames.

Panellists: Margaret Beckett, Menzies Campbell, Anne McElvoy, Tony Newton.

Panellists: Menzies Campbell, Harriet Harman, Peter Lilley, Bronwen Maddox.

Panellists: Menzies Campbell, Kay Coleman, Frank Dobson, Archie Norman.

Panellists: Beatrix Campbell, Menzies Campbell, Harriet Harman, Michael Howard.

Panellists: Diane Abbott, Menzies Campbell, Norman Fowler, Julia Neuberger, Brian Sewell.

Panellists: Margaret Beckett, Menzies Campbell, Michael Howard, Michael Nazir-Ali, Melanie Phillips.

Panellists: Michael Ancram, Menzies Campbell, Robin Cook, Martha Lane Fox, Janet Street-Porter.

Panellists: Menzies Campbell, Germaine Greer, Andrew Lansley, Vivienne Parry, Clare Short.

Panellists: Menzies Campbell, Michael Gove, Alan Milburn, Anna White, Ann Widdecombe.

Panellists: Menzies Campbell, Bonnie Greer, Peter Hain, Bernard Jenkin, George Monbiot.

Panellists: Menzies Campbell, Teresa Gorman, Emma Jones, John Maples, Chris Mullin.

Panellists: Tariq Ali, Menzies Campbell, Rosemary Hollis, Bernard Jenkin, Mike O'Brien.

Panellists: Menzies Campbell, Nigel Farage, Theresa May, Ian McCartney, Polly Toynbee.

Panellists: Michael Ancram, Menzies Campbell, Michael Grade, Patricia Hewitt.

Panellists: Margaret Beckett, Menzies Campbell, Janet Daley, Ian Hislop, Oliver Letwin.

Panellists: Michael Ancram, Menzies Campbell, Patricia Hewitt, Robert Kilroy-Silk, Jean Lambert.

Panellists: David Baddiel, Menzies Campbell, Janet Daley, Liam Fox, Ruth Kelly.

Panellists: Chris Bryant, Menzies Campbell, Alan Duncan, Sir Andrew Green, Salma Yaqoob.

Panellists: Menzies Campbell, Simon Hughes, Chris Huhne.

Panellists: Hazel Blears, Menzies Campbell, Michael Heseltine, Piers Morgan.

Panellists: Menzies Campbell, Charles Clarke, Michael Heseltine, Peter Hitchens, Amanda Platell.

Panellists: Menzies Campbell, Peter Hain, Beverley Knight, Francis Maude, Cristina Odone.

Panellists: Menzies Campbell, Kenneth Clarke, Peter Mandelson, Jane Moore.

Panellists: Menzies Campbell, Yvette Cooper, Michael Howard, Piers Morgan.

Panellists: Menzies Campbell, Ian Hislop, Ruth Kelly, George Osborne.

Panellists: Menzies Campbell, Michael Heseltine, Rachel Johnson, Piers Morgan, James Purnell.

Panellists: Margaret Beckett, Benedict Brogan, Menzies Campbell, Steve Easterbrook, Theresa May.

Panellists: Menzies Campbell, Nick Ferrari, Chris Grayling, Clare Short, Phil Woolas.

David Dimbleby chairs the topical debate from Woking.

The panel includes David Miliband, the Foreign Secretary; Shadow Work and Pensions Secretary Theresa May; the former Leader of the Liberal Democrats, Sir Menzies Campbell; the historian Simon Schama; and Daily Telegraph columnist Janet Daley.

David Dimbleby chairs the topical debate from London so that the panellists and the audience can react to the prime ministerial debate.

The panel are the Work and Pensions Secretary Yvette Cooper, the shadow foreign secretary William Hague, the former Liberal Democrat leader Ming Campbell, Plaid Cymru's leader at Westminster Elfyn Llwyd and the journalist Ann Leslie.

David Dimbleby hosts the political debate show from Richmond.

The panel includes the new Home Secretary Theresa May, Labour's Caroline Flint and Ming Campbell for the Liberal Democrats.

Plus the Director of Liberty Shami Chakrabarti and the journalist and writer Douglas Murray.

David Dimbleby chairs the topical debate from Bristol, with a panel of prominent public figures and an invited audience.

The panel includes the Cabinet Office Minister Francis Maude MP, former Liberal Democrat leader Sir Menzies Campbell MP, former home secretary Jacqui Smith, the senior editor of the New Statesman Mehdi Hasan and author and journalist Douglas Murray.

David Dimbleby chairs a debate on the big stories of the week, from London. The panel includes work and pensions secretary Iain Duncan Smith MP, Labour's deputy leader Harriet Harman MP, former leader of the Liberal Democrats Ming Campbell MP, leader of the PCS union Mark Serwotka and the businessman and star of Dragons' Den Theo Paphitis.

David Dimbleby chairs Question Time from Weymouth. On the panel conservative health minister Anna Soubry MP, former Labour culture secretary Ben Bradshaw MP, former leader of the Liberal Democrats Ming Campbell MP, editor of Private Eye Ian Hislop and journalist Angela Epstein.

David Dimbleby presents Question Time from Lady Thatcher's former constituency of Finchley.

On the panel are Conservative Cabinet Minister Ken Clarke MP, Labour's former Home Secretary David Blunkett MP, former leader of the Liberal Democrats Ming Campbell MP, Guardian columnist Polly Toynbee and Lady Thatcher's authorised biographer Charles Moore.

David Dimbleby presents Question Time from Newbury in Berkshire.

On the panel are Conservative health secretary Jeremy Hunt MP, Labour's shadow leader of the commons Angela Eagle MP, former leader of the Liberal Democrats Ming Campbell MP, author and commentator Isabel Oakeshott and broadcaster Giles Fraser.

David Dimbleby chairs topical debate from Bedford. The Panellists are justice secretary Liz Truss, Labour MP Dawn Butler, former Liberal Democrat leader Menzies Campbell, Mail on Sunday columnist Peter Hitchens and Bombay Bicycle Club guitarist Jamie MacColl.