Ed Miliband and Nick Clegg were seen deep in conversation as the two former leaders were sworn in as MPs today.
Mr Miliband - fresh from a holiday after his election loss and subsequent resignation - appeared to skip the queue to join Mr Clegg, who also quit in the wake of the Liberal Democrats' disastrous defeat.
Mr Clegg was also seen speaking to Alex Salmond, the former First Minister of Scotland and the new MP for Gordon.
Before any of the 650 MPs can take part in a debate or vote in the House of Commons, they must swear an oath of allegiance to the Crown.
The former Deputy Prime Minister Nick Clegg is to make a statement about his position after election results that saw the Liberal Democrat representation in the House of Commons slashed.
Cabinet ministers Danny Alexander, Vince Cable and Ed Davey lost their seats in what looks likely to be the worst election result ever for the party.
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Tweets about Nick Clegg have soared to 79% of the real time conversation on the social networking site - the highest of any leader over the course of the election campaign.
Earlier the Lib Dem leader was on 59% after many senior party figures lost their seats.
Nick Clegg is currently the most talked about leader on Twitter with 59% of the conversation - the highest of any leader since polls closed at 10pm.
The Lib Dem leader has held on to his Sheffield Hallam seat despite the loss of many senior party members.
UPDATE: Tweets about Nick Clegg soared to 79% of the real time conversation shortly after the Lib Dem leader won his Sheffield Hallam seat.
Nick Clegg, the Liberal Democrat leader and deputy prime minister, has held onto his Sheffield Hallam seat.
Nick Clegg is currently the most talked about leader on Twitter after the Lib Dems lost many key figures, including Vince Cable and Simon Hughes.
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A Liberal Democrat source has told ITV News' Emily Morgan that it is "close, bloody close" in Nick Clegg's seat Sheffield Hallam.
As the election campaign draws to an end, the Liberal Democrat leader says that voters face “the biggest political decision" of their lives.Read the full story ›
Nick Clegg predicted that the UK will face another General Election before Christmas if the Liberal Democrats do not form part of a coalition government following this week's poll.
The Lib Dem leader said it would be impossible for a minority government to pass key legislation without signing off controversial concessions to the SNP and Ukip.
A party statement said a second election in 2015 would be "almost inevitable" without the Lib Dems in parliament.
Everybody knows that no one will win this election – even if David Cameron and Ed Miliband won’t admit it publicly.
If they try to stagger through with a messy and unstable minority government instead of putting the country first then they will risk all the hard work and sacrifices people have made over the last five years.
The last thing Britain needs is a second election before Christmas. But that is exactly what will happen if Ed Miliband and David Cameron put their own political interest ahead of the national interest.
The only party that will ensure stability is the Liberal Democrats.
The Liberal Democrats will work with the party with the biggest mandate in the event of a hung parliament, Nick Clegg has said.
However, Mr Clegg did not specify whether this meant the party with the most number of seats or the largest share of the votes.
Asked whether he preferred to work with Labour or the Tories, Mr Clegg told BBC Radio 4: "The party which gets the biggest mandate...[it] seems to me right to give them the space and time to try and form a government."
He accused David Cameron and Nick Clegg of "preposterously charging around the country saying they're going to win an outright majority", adding that the Lib Dems want a "stable, decent and united government" after Thursday's vote.