Needs assessment (language teaching) ; BSL; British Sign Language ; Deaf education; Bicultural education (Deaf education) ; Bilingual education (Deaf education) ; Zweisprachigkeit; Bilingualism ; Bilingualism, bimodal; Bimodal bilingualism ; Taubheit; Deafness ; English (British) ; Grossbritannien (engl. Sprache in) ; Great Britain (English language in) ; Englisch in Grossbritannien; English in Great Britain; British English