You don't have to be 'poor working class' to get some financial help in the US. Even a student with a family income of £75,000 would still only pay £10,000 a year.
Source: hereOur current financial aid policy has dramatically reduced the amount families with incomes below $150,000 (about £92,000) are expected to pay, and parents of families with incomes below $65,000 (about £40,000) and typical asset worth are not expected to contribute at all to college costs.
What loan? You won't be entitled to any loan from the Student Loan Company in the UK or its Irish equivalent. I suppose you could take out a loan from a bank (whether or not you'd be offered a loan is another matter, I suspect not) - but you would have to pay it back even if you weren't earning, with interest.