It is with great sadness that we announce the death of Keith Brown who was a specialist in the theoretical and descriptive syntax of English. He was an affiliated lecturer in the Theoretical and Applied Linguistics Section, MMLL, and a fellow of Pembroke College. Prior to that he was a Research Professor at the University of Essex, and a senior research fellow at the Research Centre for English and Applied Linguistics, Cambridge. From 1990 to 1994 he was the president of the Linguistics Association of Great Britain. He was also a regular member of the council of the Philological Society and served as the Society's president from 2007 to 2009. He was editor in chief of the 12-volume Encyclopedia of Language and Linguistics (2006, Elsevier). His other works include Syntax: A linguistic introduction to sentence structure (with Jim Miller, Routledge, 1991), A Concise Encyclopedia of Linguistic Theories and A Concise Encyclopedia of Grammatical Categories (both with Jim Miller, Pergamon Press, 1997 and 1998), and Linguistics in Britain: Personal Histories (with Vivien Law, Wiley, 2002). Keith will be greatly missed.