Jennifer Jenkins is Chair Professor of Global Englishes at Southampton University, where she is founding director of the Centre for Global Englishes. She has published numerous monographs, edited volumes, articles, and chapters on ELF since 1996, including her first monograph, The Phonology of English as an International Language (2000), and The Routledge Handbook of English as a Lingua Franca (co-edited with Will Baker and Martin Dewey, 2017).

Anna Mauranen is Professor and Research Director at the University of Helsinki. She is co-editor of Applied Linguistics and former co-editor of the Journal of English as a Lingua Franca. Recent books include Changing English (2017, edited with Filppula, Klemola, and Vetchinnikova) and Exploring ELF (2012).