Nick Clegg said he "cannot envisage any circumstances" that would see the coalition collapse before the 2015 general election.
The Deputy Prime Minister added that he "really thought" the Liberal Democrats and Conservatives would continue governing until that time.
More top news
An entire North Yorkshire village which was put on the market a year ago for £20 million has been sold for an 'undisclosed' fee.
Liang Sheng Yueh, 21, was discovered on Wednesday on a mountain ledge in Nepal - but his girlfriend died three days earlier.
A Spanish ex-pro footballer who came to Britain posing as a male nanny so he could sexually abuse children has been jailed for 11 years.