Sir Peter Lampl, chairman of Sutton Trust, which promotes social mobility through education, said the research revealed "a group of bright students who need extra support and encouragement to make the right decisions".

BBC: Poorer pupils 'lack confidence' for top universities

But given that Peter Lampl, who founded the Sutton Trust, advises David Blunkett, the education secretary, on university access, this research could indeed herald a change in policy.

ECONOMIST: Talent spotting

Sir Peter Lampl, chairman of education charity Sutton Trust, welcomed the guide, adding that he hoped it would help "bright non-privileged students in particular, who all too often do not receive the support and guidance they need at this key juncture in their lives".

BBC: Top universities warn against 'soft subjects'