Meanwhile, one in 10 survive on an average of just �9.50, after rent is paid, the Times Higher Education Supplement found.

However, a wealthier 11% had �150 to spend. Some 20% of overseas students had this level of income.

The THES interviewed more than 2,000 students at 30 universities across the UK for the survey.

Part-time jobs

It also found that 39% expected to graduate with debts of more than �10,000.

Two-fifths said they worked part-time to boost their income.

Meanwhile, a quarter were living at home, as it was a cheaper option.

The findings come as the government attempts to push plans for annual tuition fees in England of up to �3,000 through parliament.

The National Union of Students says this will mean some graduates starting work with debts of up to �30,000.

However, ministers say the figure will be lower.

The survey discovered that academic success was still students' main worry, with 29% citing this as their biggest concern.

Next, on 14% each, were finding a job after graduation and the level of debt on leaving university.

Day-to-day financial worries were the biggest concern for 9% of undergraduates.