Deaf Sign Language users are people whose preferred or only language is British Sign Language (BSL).  These people have been born deaf or have become deaf early in life. People with this level of deafness are described as being profoundly deaf.  Deaf BSL users usually see themselves as part of a linguistic/cultural minority known as the Deaf Community.  A hearing professional who is not proficient in BSL (equivalent of BSL Level 3) must book a BSL/English Interpreter for all meetings and appointments with a Deaf Sign Language user in order to communicate effectively with the person.