More details of the government reshuffle have been released.
Gay MP Chris Bryant has been promoted the Deputy to Harriet Harman, the leader of the House of Commons.
Vernon Coaker remains at the Home Office but has been promoted to police minister.
Phil Woolas joins him in Jacqui Smith’s team as immigration minister.
Foreign Office minister Kim Howells and energy minister Malcolm Wicks are to leave the government.
Margaret Hodge is to leave DCMS to care for her sick husband, but may return to office.
Leading leftwing MP Jon Cruddas, who ran for Deputy Leader of the party last year, was reportedly offered the job of housing minister but after a discussion with Gordon Brown declined to join the government.
Another leftwinger, Jon Trickett, is to become Parliamentary Private Secretary to Mr Brown.
This key role acts as a conduit between MPs and Downing St, letting the Prime Minister know how the mood is on the backbenches.
Lord Adonis moves to the Department for Transport.
He was education adviser in the Number 10 Policy Unit under Tony Blair from 1998, taking charge of the unit in 2001, before being appointed to the Lords and made an education minister in 2005.
Former Tory MP Quentin Davies, who defected to Labour after Gordon Brown was elected leader, is to take up a junior role in the Ministry of Defence.
Shahid Malik, the first British-born Muslim minister, is to move to the Ministry of Justice.
Barbara Follett leaves her Equalities role for a junior ministerial role at the Department for Culture, Media and Sport.
Sadiq Khan becomes a minister at Communities and Local Government.
Rising star Kitty Ussher moves from the Treasury to the Department for Work and Pensions. She has been replaced by Ian Pearson, who will take a new joint Treasury/Business position.
Sion Simon and Kevan Jones, who tried to force Tony Blair from office in 2006 along with Mr Bryant, are given junior posts.
Former Cabinet minister Stephen Timms is the new Financial Secretary to the Treasury. It is the third time he has been appointed to that post.
He replaces Jane Kennedy, who becomes a Minister of State at Environment, Food and Rural Affairs.
Pat McFadden, a close ally of former Prime Minister Tony Blair, is to serve as deputy to Peter Mandelson at the Department for Business, Enterprise and Regulatory Reform.
The return of Mr Mandelson, the only openly gay EU Commissioner, to frontline British politics as Business Secretary has been the main story of Gordon Brown’s reshuffle, which began on Friday.
As Mr Mandelson will take a seat in the Lords, Mr McFadden will speak for BERR in the Commons.
Nick Brown, unlike Mr Mandelson a close ally of the Prime Minister, has been promoted to Chief Whip, but he will not be a member of the Cabinet.
Mr Mandelson’s appointment means that for the first time since 2001 that there is a gay person in the Cabinet.
Mr Brown will attend Cabinet as Chief Whip.
Ed Miliband is to head a new Energy and Climate Change department.
It will take over the energy duties of the Department of Business, Enterprise and Regulatory Reform and the climate change responsibilities of the Department for the Environment, Food and Rural Affairs.
Mike O’Brien and Lord Hunt of Kings Heath will serve as junior ministers in the department.
38-year-old Mr Miliband, who was first elected just three years ago, will be joined in Cabinet by Margaret Beckett, who has served as a minister under Labour Prime Ministers Harold Wilson, James Callaghan and Tony Blair.
Her new role as housing minister allows her to attend Cabinet.
The Defence Secretary is to leave the government.
It is understood that Des Browne was offered another role but turned it down. He was also Secretary of State for Scotland.
John Hutton is the new Secretary of State for Defence. Jim Murphy is the new Scottish Secretary.
The Chancellor Alistair Darling, Home Secretary Jacqui Smith, Foreign Secretary David Miliband, Schools Secretary Ed Balls, Environment Secretary Hillary Benn and Health Secretary Alan Johnson will all remain in post.
Geoff Hoon is to move from Chief Whip to replace Ruth Kelly at Transport.
Ms Kelly is to stand down as an MP at the next election.
The changes in the government are expected to prompt Tory leader David Cameron to reshuffle his frontbench team.