Labour Deputy Party Leader Harriet Harman accused Nick Clegg of "crying crocodile tears", after the Deputy Prime Minister issued an apology over pledging to scrap tuition fees.
Ms Harman said in a short statement: "This was not just the small print of his manifesto, this was Nick Clegg's key election promise when he asked people to vote for his party. It is not good enough for him to just brush that promise aside.
"Instead of crying crocodile tears he should vote with Labour to bring these tuition fees down. If Nick Clegg does not back his words with action he is just weak and spineless."
Nick Clegg has allowed a satirical site to release a musical version of his apology over his pledge to oppose an increase in tuition fees
Liberal Democrat Leader Nick Clegg has apologised for promising to abolish tuition fees during the 2010 election campaign.