Ben Rampton is Professor of Applied & Sociolinguistics at King's College London. He does interactional sociolinguistics and linguistic ethnography, and his interests cover urban multilingualism, youth, ethnicity & social class, conflict & (in)securitization, and language education policy & practice. His books include Crossing: Language & Ethnicity among Adolescents (1996/2018) and Linguistic Practice in Changing Conditions (2022). He founded www.wpull.org and was founding convener of the Linguistic Ethnography Forum, directed the King’s first Interdisciplinary Social Science Doctoral Training Centre, and is regularly involved in adult migrant language teaching.