Interpreting Services

Telephone Interpreting Services

Any hour of the day, an interpreter on the line within minutes, in more than 300 languages, whenever a conversation cannot wait.

Last reviewed

Telephone interpreting services connect you, the person you need to speak to and a qualified interpreter on a single three-way call, usually within a couple of minutes. Prism Linguistics runs telephone interpreting 24 hours a day, every day of the year, in more than 300 languages, for NHS teams, councils, police forces and UK businesses. Calls are charged by the minute.

There is nothing to install and nothing to schedule. You ring us, name the language, and we bring an interpreter onto the call. It sits alongside the rest of our interpreting services, and it is the mode most of our clients reach for first, simply because it is the only one that works at the speed of a ringing phone.

Phone interpreting for calls that cannot wait

The strength of phone interpreting is speed. No travel, no diary to coordinate, no minimum booking. That makes it the natural choice for any service that takes calls from the public and never quite knows which language the next one will be in.

NHS 111 and A&E triage teams use it because a clinical question often cannot wait. Councils use it for housing and benefits calls. Police forces, charities and crisis lines use it because distress does not keep office hours. In every case the alternative is a missed appointment, a turned-away caller, or a conversation that simply does not happen. It is kinder on a budget too, since you pay only for the minutes you use.

How a call works

How over-the-phone interpreting (OPI) works, step by step

Over-the-phone interpreting, or OPI, is deliberately simple. Four steps, and most of them take seconds.

  1. 1

    Dial the interpreting line

    Ring the number on your account card, or call +44 (0) 20 3880 6688. Account holders quote a PIN or department reference. One-off callers just give a name and organisation.

  2. 2

    Name the language you need

    Tell the operator the language, and the dialect where it matters. Sorani and Kurmanji are both Kurdish, and they are not interchangeable. If you genuinely do not know what the caller speaks, the operator can usually work it out from a few words or the country of origin.

  3. 3

    We connect the interpreter

    A qualified interpreter for that language joins the line. For widely spoken languages this normally takes a couple of minutes. For rarer ones we may be waking someone who is on call, and we will say so rather than leave you listening to hold music.

  4. 4

    Hold the three-way call

    Add the other party, or ask us to dial out. Speak to the person rather than to the interpreter, use short turns, and avoid asides. The interpreter relays both sides accurately and stays neutral. End the call and billing stops.

Typical settings

On-demand telephone interpreters, with no booking needed

If your team speaks to the public by phone, an on-demand telephone interpreter keeps those conversations moving rather than parking them.

NHS triage and reception

Booking lines, results calls, medication queries and 111 triage. Clinical staff get an interpreter on the line before the caller gives up waiting.

Councils and out-of-hours teams

Council tax, benefits, school admissions and the duty line at eleven at night. Residents get an answer in their own language without a second appointment.

Housing, utilities and insurance

Reporting a leak, arranging access for a gas safety check, a meter reading, a claim after a car accident. Short factual calls where a misunderstanding means a wasted visit.

Police first contact

Initial contact, welfare checks and witness calls where an interpreter is needed in the moment. Longer interviews move to an interpreter in the room.

Helplines and charities

Crisis lines, advice services and support charities. Round-the-clock cover means a caller in distress is never turned away for want of a language.

24/7 interpreting, including nights, weekends and bank holidays

The line runs 24 hours a day, 365 days a year. A Sunday at 3am is staffed the same way a Tuesday at 11am is, because the services that need us most are the ones that do not close either.

Out-of-hours calls have their own character. Shorter, more urgent, more likely to involve a language nobody in the building speaks: homelessness presentations, safeguarding concerns, a ward seeking consent at two in the morning.

Rare languages at short notice

We work in more than 300 languages and dialects, and the phone is where that breadth counts hardest. If your caller speaks Tigrinya, Sorani, Pashto or Dinka, the nearest qualified interpreter might be three hours away by car and three minutes away by telephone. Common languages such as Polish interpreter requests connect fastest of all; less common ones can take a few minutes longer while we reach an interpreter on call. Our full language list is worth a look if yours is unusual.

Telephone interpreting for NHS teams and GP surgeries

Healthcare is our busiest phone setting by some distance. A GP receptionist ringing to move an appointment, a pharmacist checking a dosage, a practice nurse explaining a blood test result, a 111 clinician working through a symptom checklist. None of those justify a booked appointment with an interpreter in the room, and all of them go badly wrong without one.

Interpreters working in clinical settings are professionally qualified and background-checked, with Enhanced DBS clearance where the setting calls for it, and they are used to the pace of a triage call. If a patient later needs a longer consultation, a mental-health assessment or a maternity appointment, that is where you switch to face-to-face interpreting instead. There is more on how we support trusts and practices on our healthcare sector page.

Telephone interpreter for councils and utilities

Local authorities were among the first to put a telephone interpreter on every public-facing desk, for practical reasons. A borough might deal with forty languages across housing, revenues, children's services and the out-of-hours duty line, with no way of predicting which one turns up on the phone. Keeping interpreters on retainer for forty languages is impossible. Dialling one in twenty seconds is not.

Utilities, water companies and insurers use it much the same way. A meter reading, a payment plan, a claim notification: factual exchanges with a clear beginning and end, where the phone loses almost nothing compared with meeting in person. Where a customer is vulnerable or the matter is contested, we would usually suggest a longer planned session, and our private interpreting page explains how personal bookings work.

When telephone interpreting beats face-to-face, and when it does not

We will say this plainly, because agencies rarely do: the phone is not always the right answer.

Telephone works well for short factual calls, unplanned contact, out-of-hours cover, rare languages at no notice, and any situation where the alternative is no interpreter at all. Ten minutes, one topic, two people who both want the same outcome. That is the sweet spot.

Telephone works badly for long appointments, emotionally difficult conversations, anything where documents are being read and signed, group discussions with several speakers, and any setting where body language carries real meaning. A safeguarding meeting, a court hearing or a first mental-health assessment should have an interpreter present. Booking face-to-face interpreting in major UK cities can usually be arranged within two to four hours, so the gap is smaller than people assume.

In between sits video interpreting, which keeps the speed of a call but restores facial expression. For events with several languages running at once, you want conference interpreting and proper equipment instead.

How telephone interpreting is charged: per-minute billing

Telephone interpreting is billed by the minute, from the moment the interpreter joins to the moment the call ends, and we do not apply a minimum on most calls. A three-minute call to rearrange a clinic appointment costs about a tenth of a half-hour benefits conversation, which is exactly as it should be.

Three things move the rate: the language (widely spoken European languages sit at the lower end, rare African and Asian languages higher), the time of day (evenings, weekends and bank holidays carry an out-of-hours premium), and whether you are quoted ad hoc or on an agreed schedule. Public sector clients on NHS framework or Legal Aid Agency rates are quoted at those published rates rather than ours.

Volume changes the arithmetic: for hundreds of calls a year we will write a fixed-rate schedule covering the languages and settings in scope, which usually works out cheaper per call. Honest ranges for every mode are on our pricing page, and for a figure against your own usage, send the basics through the quote form for a price within one working hour in office hours.

Confidentiality on interpreted calls

Every interpreter works under a non-disclosure agreement, and calls are handled in line with UK GDPR. Interpreters relay what is said and nothing more: no advice, no side conversations, no summarising on your behalf. Much of our daily work is clinical, police and immigration material, so discretion here is routine rather than a special arrangement.

How to set up an account or make a one-off call

For a single call, ring +44 (0) 20 3880 6688 and tell us the language. You do not need an account, a contract or a purchase order in place first.

For a team or department, an account is worth the twenty minutes it takes. Tell us which teams need access, how many calls you expect, and which languages come up most often locally, because that varies enormously between, say, Bradford and Boston in Lincolnshire. We set up a dedicated number and access codes so staff dial straight through without asking a manager, and we can report usage by department. Setup is usually done within a working day.

Language-specific pages such as Arabic interpreters cover what to expect from an individual language, and the parent interpreting services page compares every delivery mode side by side. If you would rather talk it through, contact our team.

Questions people ask

Telephone interpreting FAQs

How quickly can I reach an interpreter by phone?
For widely spoken languages, you are usually connected within a couple of minutes at any hour. Rarer languages can take a little longer, as we may need to reach an interpreter who is on call rather than one already waiting. We will always tell you if there is a wait.
Is telephone interpreting available out of hours?
Yes. The phone interpreting service runs 24 hours a day, every day of the year, including weekends and bank holidays. It is used by NHS services, council out-of-hours teams and helplines that cannot wait until morning.
Do I need to book a telephone interpreter in advance?
No. Telephone interpreting is designed for calls that cannot wait, so you can request an interpreter on the spot. If you know you will need one for a scheduled call, you are welcome to book ahead, but it is not required.
How much does telephone interpreting cost?
Telephone interpreting is charged by the minute, and we do not apply a minimum on most calls, so a two-minute call costs roughly a tenth of a twenty-minute one. The rate depends on the language, the time of day and whether the work sits on a framework or contract schedule. Our pricing page sets out honest ranges, and public sector clients on NHS framework or Legal Aid Agency rates are quoted at those published rates.
When is telephone interpreting a better choice than face-to-face?
Telephone interpreting suits short, urgent or unplanned conversations: a triage call, a benefits query, confirming an appointment. For long, sensitive or document-heavy meetings, a face-to-face or video interpreter is usually the better fit.
Can you provide telephone interpreters in rare languages?
Yes. We work in more than 300 languages and dialects, including ones where the UK pool of qualified interpreters is genuinely small, such as Tigrinya, Kurdish Sorani, Pashto and Dinka. Rare languages are exactly where the phone earns its keep, because the nearest interpreter may be three hours away by car but seconds away by telephone.
Are telephone interpreting calls confidential?
Yes. Every interpreter works under a non-disclosure agreement, and calls are handled in line with UK GDPR. Nothing said on the call is shared or kept beyond what is needed to run the service.
How do we set up telephone interpreting for a whole team?
Tell us which teams need access, roughly how many calls you expect and which languages come up most. We set up an account with a dedicated number and access codes, so staff can dial straight through without going via a manager. Setup is usually done within a working day, and there is nothing to install.

Set up telephone interpreting for your team

Whether you need it for one department or a whole organisation, we can have you connecting to interpreters quickly. Get in touch and we will set it up.