University of Wales, being a Federal University, is made up of various Constituent Institutions, University Colleges and Associated Institutions. To know the rating of University of Wales, the rating of each of the constituent institutions will have to be looked at separately. All the constituent institutions of University of Wales are very highly rated and some of them figure in the top 20 Universities within UK.
More information about the accredited institutions for which the University of Wales is the degree awarding body can be found at: http://www.wales.ac.uk/defaultpage.asp?page=E14