Full line-up for BBC Question Time at St Paul's announced

Lord Heseltine - Conservative
A prominent player in the governments of both Margaret Thatcher and John Major, Michael Heseltine first became a Member of Parliament in 1966 and held various Cabinet positions, including for defence, environment and trade, before becoming Deputy Prime Minister in 1995. He retired in 2001 and took up his seat in the Lords soon after.

Diane Abbott MP - Labour

The first black woman in the House of Commons, Diane Abbott has been an MP since 1987. Not afraid to split from party policy, she voted against both the war in Iraq and the former Labour government's plan for ID cards. She ran for the leadership of the Labour part in 2010 but was eliminated in the first round. She is now Shadow Minister for Public Health.

Vince Cable MP - Liberal Democrat
A member of the Coalition government, Vince Cable currently holds the Cabinet position of Secretary of State for Business, Innovation and Skills. An economics graduate who previously worked in industry, Vince Cable first became an MP in 1997 at the fourth attempt. He acted as leader of the Liberal Democrats for a brief period in 2007.

Giles Fraser - priest
The Reverend Canon Giles Fraser is the vicar of St Mary, Newington, as well as a media commentator on religious matters and columnist for the Guardian and Church Times. He held the post of Canon Chancellor at St Paul's Cathedral from 2009 until 2011. A priest since 1994, prior to St Paul's he was Team Rector of St Mary's, Putney, and he has authored several books.

Peter Hitchens - journalist and author
Formerly an atheist, Peter Hitchens is now part of the Church of England and is a strong advocate of traditional values within the Church. A Daily Express reporter from 1977, he initially focused on labour affairs before becoming a foreign correspondent, working in both Moscow and Washington DC. He is the author of a number of books and currently has a column in the Mail on Sunday.

Question Time, hosted by David Dimbleby, will be broadcast on Thursday 21 February at 10.35pm on BBC1.

The Cathedral will be live tweeting throughout the programme. Please join the debate by following us on Twitter at @stpaulslondon using the hash tag #bbcqt.