Question Time, the BBC's premier political debate programme chaired by David Dimbleby, was in Croydon on 28 June.
David Dimbleby was joined by Housing Minister Yvette Cooper, former Conservative Party leader Michael Howard, Liberal Democrat leader Sir Menzies Campbell and former newspaper editor Piers Morgan.
YVETTE COOPER MP
Career: Yvette Cooper is housing minister in Gordon Brown's new cabinet.
After a brief spell as an adviser to the Bill Clinton presidential campaign, she began working with Gordon Brown in 1992, having spent two years as an economics researcher for his predecessor as shadow chancellor, John Smith.
She became an MP in 1997 and joined the government in 1999 as parliamentary under secretary of state for public health.
She is married to the Economic Secretary to the Treasury, Ed Balls, who is widely regarded as Gordon Brown's right-hand man.
MICHAEL HOWARD MP
Career: Michael Howard was leader of the Conservative Party from 2003 until 2005, when he resigned after Labour's third successive election victory.
He has been MP for Folkestone and Hythe since 1983 and held a number of high-profile roles in the government and opposition.
His tenure as home secretary, from 1993 to 1997, was notable for his tough stance on crime. He was elected unopposed as Conservative leader in 2003, having lost out for the leadership in 1997 to William Hague.
He supported the decision to invade Iraq in March 2003 but in 2004, as leader of the opposition, he called for Tony Blair to resign for failing to ask "basic questions" over claims made in the Iraq dossier.
Last week he told the Mail on Sunday that Tony Blair was "an absolutely superb actor" who was prepared "to sell his soul to the political devil."
SIR MENZIES CAMPBELL MP
Career: Ming Campbell is leader of the Liberal Democrats.
After a career as an Olympic athlete, he entered parliament in 1987.
In March 1996 he became party leader, succeeding Charles Kennedy.
He has been an outspoken critic of the war in Iraq and has led calls for an inquiry into the conflict.
His party recently performed poorly in the local elections after losing votes to a resurgent Tory party, leading the Lib Dem trade and industry spokesperson to suggest that Sir Menzies "might well" quit before the next general election. This has been denied by party insiders, who say he is "looking forward to the battle ahead."
Career: At 29, Piers Morgan was made editor of the News of the World newspaper.
He then embarked on a high-profile editorship of the Mirror during which the paper became a vociferous opponent of the Iraq war.
He was sacked from the job after publishing photos of the abuse of Iraqis by British soldiers which were shown to be fake.
He later said: "I didn't mind losing my job. Maybe Tony Blair or one of the cabinet will have the good grace, after 100,000 Iraqis died, to lose their job."