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Justine Greening says new proposals will disadvantage lower income earning graduates.
The House of Commons is adjourned after a leak developed in the Commons chamber.
BBC News, education correspondent
Justine Greening says she had plans to scrap tuition fees, before she lost the job of education secretary a year ago.
The MP for Putney says she wanted a graduate contribution scheme to fund England's universities where "you wouldn't have a loan, you wouldn't have tuition fees".
Ms Greening says she was worried that tuition fees of £9,250 per year could start to put off poorer students.
The government said its review of fees would make sure there was "value for money for both students and taxpayers".