BSL interpreting, on video or in person, for Deaf people from the United Kingdom in US court, medical and immigration settings. An ASL interpreter is not a substitute.
Prism Linguistics provides British Sign Language (BSL) interpreters for court hearings, depositions, medical appointments and USCIS interviews anywhere in the United States, on video or in person, for Deaf British visitors and nationals whose language is BSL rather than American Sign Language, and BSL is never interpreted by telephone.
Last reviewed September 2, 2026 by Sarah J, Prism Linguistics
The call usually comes after a mistake. A hospital or a court booked an ASL interpreter for a Deaf visitor from Britain, the interpreter arrived, and the two of them could not understand each other. That is not a bad interpreter. It is the wrong language. BSL and ASL are unrelated: different grammar, different vocabulary, and BSL fingerspells on two hands where ASL uses one. Our office is in New York; BSL interpreters in this country are scarce, so most assignments run on video, with an in-person interpreter where one is within reach of the appointment.
The 2021 census of England and Wales recorded about 22,000 people whose main language is BSL, and the ones who need us here are a specific group: Deaf British tourists and business visitors who fall ill or get into legal trouble, and Deaf British nationals living in the United States who are going through a divorce, a custody dispute or an immigration case. Under the ADA a hospital or court must provide a qualified interpreter in the language the Deaf person actually uses, at no cost, and for a BSL user that duty is not met by any ASL interpreter, however good.
No US credential exists for BSL. RID and the state boards test ASL only. The register that matters is NRCPD, the UK body that registers sign language interpreters, and NRCPD registration is what we look for before we assign anyone. A phone line is useless for a signed language, so every BSL booking is either a video session or a person in the room.
A Deaf British party in a US family court, a deposition, or a criminal matter arising during a visit needs a BSL interpreter the court's own roster will not have; courts come to us for exactly this. Legal BSL work is demanding, and we prefer an interpreter with UK court experience who is used to the register. Video works for most hearings; for a trial or a long deposition we try to place someone in the room and tell you honestly if we cannot. Prism is a private agency and is not on any court's appointed vendor list.
Emergency departments are where the ASL mix-up happens most, because the triage nurse sees signing and books the interpreter she knows. A Deaf British patient explaining chest pain or consenting to surgery needs BSL, and a hospital that takes federal funding has to provide it at no cost. Video remote interpreting on a ward tablet reaches any hospital in the country within hours, and it is the realistic option in most cities. For an extended admission we look for an in-person BSL interpreter nearby.
Video is how most BSL work in the United States gets done, and done properly it is not a compromise. The interpreter needs a stable connection, a camera that shows hands and face, and a brief on the appointment in advance; the Deaf person needs a screen they can see clearly. For a USCIS interview, an attorney consultation or a clinic visit, a scheduled video session with a NRCPD-registered interpreter is usually better than an in-person interpreter who signs ASL.
We are asked for BSL translation and the honest answer is that no such document service exists, from anyone. BSL has no written form, and the paperwork a Deaf British person carries, a UK birth certificate, a decree absolute, a court order, is already in English and needs no translation for USCIS or a US court. What a BSL translator does in practice is sign an English document into BSL: an attorney walking a client through a settlement, a clinician explaining a consent form, an officer checking a certificate against an application. Where a Deaf client wants a recorded BSL version of an English document for later reference, that is a video production job and we quote it as one. Written translation of English-language UK records into another language is a separate service at certified translation.
Tell us the date, the city and the setting, or send a clear scan of the document. We reply with a fixed price and, for interpreting, a named linguist. Call +1 (833) 282 8883, email info@prismlinguistics.com, or use the quote form and you will hear back within 60 minutes during business hours.
Our only office is in New York, and our British Sign Language interpreters work nationwide. For in-person work we assign someone based in or near the city. These are the areas where British Sign Language work is concentrated; the full list of 288 cities is below it.
Prism Linguistics is rated 4.6 out of 5 across 67 client reviews for its interpreting and translation work in the United States. That is the company-wide figure; we do not publish a separate rating per language because there is no honest way to measure one. If a British Sign Language assignment ever falls short, tell us and we put it right.