Dr Jonathan Morris is the Coleg Cymraeg Cenedlaethol Lecturer in Linguistics and Applied Linguistics at the School of Welsh, Cardiff University. His research focuses on sociolinguistic and phonetic aspects of bilingualism and second language acquisition. Specifically, he is interested in how social factors influence the Welsh and English of bilingual speakers. These social factors might influence how bilinguals produce their languages or how they use and feel about them. Jonathan is assisting with the coordination of data collection (WP1).