Mukul Saxena is Assistant Professor in the Centre for Applied Linguistics, Warwick University, UK. Before this, he worked in Brunei Darussalam, Lancaster and York. His publications and research interests are in the areas of (English-)bilingual classroom interaction, Multilingual literacies, Language maintenance & shift, World Englishes.

Tope Omoniyi is Professor of Sociolinguistics in the School of Arts at Roehampton University, London (UK). His research interests straddle issues in language and identity, language in education, and language policy and planning in Europe and Africa. His scholarly articles and reviews have appeared in numerous journals. He is the author of The Sociolinguistics of Borderlands: Two Nations, One People (AWP 2004) and editor and co-editor of several volumes of essays.