Geoffrey Leech. (quoted from wikipedia)

Geoffrey Leech was Professor of Linguistics and Modern English Language at Lancaster University from 1974 to 2002.He then became Research Professor in English Linguistics. He has been Emeritus Professor in the Department of Linguistics and English Language, Lancaster University, since 2002.
Leech's main academic interests are:English grammar；Semantics；Stylistics；Pragmatics； Corpus linguistics；Corpus-based natural language processing by computer. http://www.ling.lancs.ac.uk/profiles/Geoffrey-Leech/