Students from the poorest homes will qualify for up to �13,000 in total

Chancellor Lord Patten is to launch a campaign giving those from low income homes up to �13,000 over their degree.

The Oxford Opportunity Bursaries are to be advertised nationwide in newspapers and on billboards from Tuesday.

The university describes the bursary, available from 2006, as a "golden opportunity to every talented young person previously deterred by cost".

The university says the money, available from 2006, will cover living expenses, with reintroduced government grants.

First unveiled in December last year, the bursary is set to cost the university �6m a year - a third of the extra income to be generated by new top-up fees.

Currently, 3% of the student body at Oxford are from the lowest income bracket, while one in five would qualify for the bursary at some level.

Speaking in December, Oxford's vice-chancellor, John Hood, said: "We remain determined that those with the greatest academic potential, regardless of their financial circumstances at home, should believe that Oxford is the place for them."