Prime Minister David Cameron has faced criticism for having claimed that tuition fees of £9,000 a year would be exceptional under the new funding arrangements for universities in England.
At PMQs on 30 March 2011, opposition leader Ed Miliband said that the changes had been "sold" to the public on the basis that £6,000 fees would be normal and universities would only be able to charge the maximum £9,000 "in exceptional circumstances".
But of the 23 universities that have announced their fees for the year beginning 2012, 18 have said they will charge the maximum amount, he told MPs.
"It's not the exception, it's the rule," Mr Miliband concluded, claiming the Treasury would have to pay out more money than expected to fund the higher loans.
Mr Cameron said: "Universities can only charge £9,000 if they go through a number of steps to prove that they really are improving access to universities."
He added that the Office for Fair Access would decide whether an institution could go to the £9,000 limit.
"Very tough rules have been published," he said.
Mr Cameron also told MPs that the UK would not rule out arming Libyan insurgents to protect civilians.
He said the UN Security Council resolution would not block the supply of weapons "in certain circumstances" despite an arms embargo on Libya.
But he was urged to use "extreme caution" by former Liberal Democrat leader Sir Menzies Campbell.
The legal position "was by no means clear" and the political consequences of any policy would be "very difficult to predict", Sir Menzies said.