Bristol rates as one of the top research universities in the UK
The University of Bristol has been rated equal first in the UK, with Cambridge, for the quality of its geography research.
More than 61% of its research work is "world-leading" or "internationally excellent" according to the 2008 Research Assessment Exercise (RAE).
The University of Bath similarly had 60% of its total research activity judged to be "world-leading".
The RAE results determine how much funding research areas receive.
Professor Eric Thomas, University of Bristol vice-chancellor, said: "These results confirm that Bristol is producing an exceptional volume of truly outstanding research.
"Research conducted here is making a real difference not only to the sum of human knowledge but also to the overall well-being of mankind."
Professor Jane Millar, University of Bath pro-vice-chancellor, said: "I am particularly pleased that two-thirds or our individual subject submissions are ranked in the top 10 nationally, including over a third in the top five."
The University of the West of England (UWE) was also considered, by RAE, to have "high levels of world-leading and internationally excellent research" in Biomedical Sciences, Art and Design and Communication, Cultural and Media Studies.
Professor Steve West, Vice-Chancellor of UWE said, "These results are excellent news for UWE. This year's RAE results are another milestone in our progress towards the vision of UWE as an institution carrying out world-class research in areas of strength."
The RAE is an independent assessment of the quality of research in UK universities and is carried out on behalf of the higher education funding bodies.