A leading scholar, internationally, of comparative law, Sir Basil taught for many years at Cambridge, Oxford, University College London, and the University of Texas at Austin, where I had the pleasure of being his colleague.   Fluent in multiple European languages, he was widely honored for his work in Germany, Italy, France, his native Greece, and the U.K., where he was knighted in 2005.  The Texas memorial notice is here.

ADDENDUM:  An informative obituary from The Telegraph here.