AI receptionists: the complete UK guide (2026)

Every small business has the same phone problem. The calls come when you are busy, on a job, with a customer, or closed. Voicemail catches few of them. A receptionist costs a salary. An AI receptionist is the newest answer, and in 2026 it is good enough that most UK owners should at least try one.

This guide covers everything you need to decide and to set one up. It explains what an AI receptionist is and how it works. It shows what an AI receptionist can do once it has the right access, and how Line builds and routes receptionists. It compares it, honestly, with voicemail, phone menus, answering services and hiring. It shows the real UK costs and the law. And it gives you the tools: a finder, a cost calculator, a greeting generator, and more than 40 templates you can copy.

Line wrote this guide, and Line sells an AI receptionist. Every competitor price and every legal fact links to its source.

A year to employ one full-time receptionist at the National Living Wage, with employer NI and pension. Before recruitment, cover and a desk.

£28,389

Line calculation from gov.uk 2026/27 rates

Is what 75% of UK adults give a business before they give up calling. Answer the second call and you keep most of them.

3 tries

BT Business / Censuswide, 2,000 UK adults, September 2026

Of UK adults are comfortable with an AI answering their call when it can hand them to a person. 54% are when it says it is an AI at the start.

68%

Moneypenny / Censuswide, 5,001 UK adults, January 2026

Of worldwide turnover is the fine the CMA can impose for misleading consumers. It says you answer for your AI agent as you would for an employee.

10%

CMA, Complying with consumer law when using AI agents (March 2026)

What is an AI receptionist?

An AI receptionist is software that answers a business's calls and messages in a natural voice, 24 hours a day, and does the receptionist's job. It understands what the caller wants and how they feel, answers questions, books appointments, looks up orders and jobs, updates records and deals with complaints. It works from the same information and systems a human receptionist uses, and it answers many calls at once, so no caller waits.

It is not three things it is often confused with:

• Not a phone menu. An auto attendant plays a recording and asks callers to press 1 or 2. It routes calls, but it cannot hold a conversation. See auto attendant vs AI receptionist.
• Not voicemail. Voicemail records a message and waits. An AI receptionist talks to the caller, asks the right questions, and can deal with the call there and then.
• Not a person. A virtual receptionist at an answering service is a real person in another office. In the UK that is what most people mean by "virtual receptionist", though some AI providers now use the term too. See AI vs virtual receptionist.

The same technology also answers texts, WhatsApp messages and website chat. On the phone, it is called an AI receptionist. In a messaging app, it is usually called an AI agent or assistant.

How does an AI receptionist work?

An AI-answered call goes through six stages. The whole loop, from the caller finishing a sentence to the AI starting its reply, takes about a second.

1. Step 1

   The call arrives

   On the number your customers already use. Your phone line forwards calls to the receptionist: all of them, only after hours, or only when nobody picks up.

2. Step 2

   It answers at once

   With your greeting, in under a second, and it says it is a virtual assistant. There is no queue and no hold music.

3. Step 3

   It listens

   Speech recognition turns the caller's words into text as they speak, accents and background noise included.

4. Step 4

   It decides

   A language model reads your knowledge and rules, and the caller's tone, then answers, looks something up in your systems, takes an action such as a booking, or hands over where you have asked it to.

5. Step 5

   It replies

   A natural voice speaks the answer. If the caller interrupts, it stops and listens, the way a person would.

6. Step 6

   Everything is recorded

   The transcript, the details captured and every action taken are logged, and anything you keep for a person reaches your team, marked urgent where it needs to be.

Three ways to connect it to your phone

You do not need a new number. Your phone line sends calls to the AI receptionist using call forwarding. You choose when:

Most UK phone lines and mobiles support all three. On a mobile, the codes are set from the keypad. Our guide to forwarding calls to another phone has the codes for each UK network. You can also move your number to the AI provider's phone system, which keeps everything in one place.

What can an AI receptionist do?

Everything your receptionist does on the phone and in messages, once it can reach what your receptionist reaches. A receptionist is good at the job because they know the business and can see the diary, the customer list and the jobs board. Give an AI receptionist the same information and the same systems, and it can do the same work: answer the question, book the visit, check the order, sort out the complaint, and update the record.

The difference between an AI receptionist that only takes messages and one that runs the front desk is not intelligence. It is access.

It reads tone, not just words

Modern voice AI hears how something is said as well as what is said. It notices frustration, urgency, confusion and distress, and it changes its approach the way a good receptionist does: it slows down, acknowledges the problem, skips the script and gets to the point. An upset caller with a late delivery does not need a person because they are upset. They need someone who can see the order, explain what happened and put it right. An AI receptionist with access to the order can do exactly that.

Access is the whole job: APIs and MCP

There are three ways to give an AI receptionist what your receptionist knows and uses.

1. Knowledge. Your services, prices, areas, policies and FAQs, as documents it reads before it answers. This covers most questions.
2. Built-in connections. Calendars are the common one: Google and Microsoft calendars connect in a few clicks.
3. APIs and MCP. Almost every business system, from CRMs and job-management software to booking, e-commerce and accounts, has an API: a way for other software to read and change its data. MCP, the Model Context Protocol, is an open standard built for exactly this: software publishes its actions as tools, and an AI agent uses them. Connect a system once, and the receptionist can look up a customer, check a job, or create a booking in it, during the call.

Set its limits as you would for a new starter

You would not give a new receptionist the authority to refund any amount on day one. Set the same limits for an AI receptionist, per action:

• Do it. Look up an order, check the diary, take a booking.
• Ask first. Issue a refund or confirm a booking, after a person approves it.
• Draft only. Write the reply or the change for a person to send.
• Not allowed. Leave the action switched off.

Hard limits, such as a maximum refund, belong in the system's rules, not only in the instructions. Some decisions you keep for a person because a regulator says so: clinical triage in a GP surgery needs clinical safety approval, and regulated legal or financial advice needs an authorised person. The CMA also expects a person to keep checking: it says to make sure there is "a human in the loop, actively checking that the AI agent is making correct decisions" (CMA, March 2026). These are rules about authority, not limits on what the AI can understand.

How Line builds AI receptionists

In Line, a receptionist is an agent you build in the agent creator. Start from Molly, the pre-built receptionist, or create a new agent, and build as many as your business needs: one for the main line, one for emergencies, one for bookings on WhatsApp. Each agent is set up in seven sections.

Calls run on a realtime voice, or on a speech pipeline that can work in eight languages, from British English to French, German and Spanish.

Five receptionists you can build

The same creator builds very different receptionists. These are the shapes we see most:

• Front desk. An open conversation on your main number. Answers anything in its knowledge, books visits in your calendar, checks job status in your job system, and hands over complaints above its goodwill limit.
• Intake. A fixed list of details to collect: for example name, postcode, job type and urgency. It asks one question at a time, reads the details back, and finishes. Ideal for quote requests, new patients and emergency call-outs.
• Bookings. Connected to your calendar, set to book on its own or ask first. Works well on WhatsApp and web chat, where customers book at 11pm.
• Customer service. Connected to your order or account system through an API or MCP. Answers "where is my order?", changes a delivery, or raises a refund for you to approve.
• Owner's assistant. No customers at all. Runs tasks on a schedule or when something happens, such as reviewing yesterday's new leads every morning and reporting what needs a call back.

Route every call and message to the right receptionist

In Line, every number and channel has a workflow, and the workflow decides who handles what comes in. The Agent step in a workflow chooses which receptionist answers and how: Act, where it replies itself, or Draft, where it writes the reply for a person to check and send. Calls always run in Act. Opening hours, ring times and "nobody picked up" are steps in the same workflow.

Each receptionist keeps its own knowledge, tools and limits. You change one without touching the others, and you can see in Activity exactly what each one did.

Your options for answering business calls

There are five ways to get a call answered, plus the mix most growing businesses end up with: an AI that answers first and a team behind it. Here they are side by side.

Voicemail and a missed-call text

Voicemail is free and always on, but it is a weak safety net. In the most-quoted UK data, 69% of callers who reached a small business's voicemail hung up without a message (Moneypenny, 2016, a vendor study). Callers also screen unknown numbers: in 2026, 85% of UK consumers said they do not answer them (Hiya), so your call back may not get through either.

If you stay with voicemail, add an automatic missed-call text. It reaches the caller on the number they dialled, and many will reply to a text who would never leave a message. Our voicemail greeting templates cover every situation.

Auto attendant (phone menu)

A recorded menu that routes callers by key press. It is the right tool when callers want a particular person or team and someone is there to answer. It is the wrong tool when nobody is there: a menu that ends in voicemail is still voicemail. Read auto attendant vs AI receptionist.

Human answering service

Trained receptionists at another company answer in your business name, take a message and send it to you. Callers hear a person. But most services work from a script and a message pad: they cannot see your diary, your customers or your jobs, so they take a message rather than act on it. You pay per call, about 99p to £2.20 each on pay as you go, or a monthly bundle, and evening and weekend cover often costs more. Read phone answering services in the UK and Moneypenny alternatives.

In-house receptionist

Your own person on the phone and at the front desk. A good receptionist knows your customers and your systems, and is the only option that can greet a visitor in person. But one full-time person covers about 20% of the 8,760 hours in a year once holidays and sickness are taken out, answers one call at a time, and costs about £28,400 a year at the National Living Wage. Calls during their lunch, their holiday, another call, or after 5:30 still go to voicemail.

AI receptionist

Answers every call at once, day and night, for a monthly fee and a per-minute charge. With your knowledge and your systems connected, it does the whole job on the call: answers, books, checks, fixes and records. Without them it can only take messages, so the access you give it decides how much it does.

AI first, people behind it

The mix that works for most busy businesses. The AI answers every call and message first and does the work, and the team handles the decisions you keep for a person: approvals above a limit, regulated advice, and anyone who asks for a person. Your team spends its phone time where you want a person, not on the next "are you open Saturday?".

Which option fits your business?

Answer four questions. The advice uses the same comparison as the table above.

What does an AI receptionist cost in the UK?

AI receptionists sold in the UK use four pricing models: a flat monthly fee, a fee per call, a fee per minute, or an AI receptionist included with a business phone system. From most providers, the cheapest paid plans with AI answering cost about £37 to £49 a month, excluding VAT, and past a plan's included minutes most charge 15p to 37p a minute. A typical three-minute call therefore costs 45p to £1.11 to answer with AI, against 99p to £2.20 for a person at an answering service. With Line, the AI receptionist is included on the £19 Pro plan, or added to the £4 Starter plan as a paid add-on, and answered calls cost 2p a minute.

Enter your own numbers. The calculator shows the monthly cost of each option and how many of your calls each one actually answers.

What a receptionist really costs

The salary is only the start. This is one full-time receptionist on the 2026/27 rules:

Sources: National Living Wage (£12.71 from April 2026), employer NI rates 2026 to 2027, pension minimums, ONS ASHE 2025 (receptionists, SOC 4216), CIPD 2026. Hours assume 5.6 weeks' leave and 2% sickness. A small employer that can claim the Employment Allowance may pay no employer NI on one receptionist. A desk, equipment, training and holiday cover are extra.

For every provider's price, the hidden fees to check, and a worked example, read how much an AI receptionist costs in the UK.

Is an AI receptionist worth it?

Yes, if you miss calls and a missed call can be a lost customer, or if your team spends hours a day on calls that follow a pattern. No, if you already answer every call at once, day and night.

The evidence on missed calls is better in 2026 than it used to be. In BT's survey of 1,500 UK small and medium businesses in September 2026, 67% said they miss at least one potentially valuable call on an average day. In the same study, 75% of 2,000 UK adults said they give a business three call attempts before giving up (BT Business / Censuswide). So a missed call is not always lost, but a caller you miss twice is going elsewhere.

Work it out for your own business:

1. Count your missed calls for two weeks. Your phone system or call log shows them.
2. Estimate how many are new customers. For most trades and clinics, between one in three and one in five.
3. Multiply by what a new customer is worth to you in the first year.
4. Compare with the monthly cost from the calculator above.

Worked example. A plumber misses 40 calls a month. One in four is a new enquiry, so 10. If they would have won half of those at £180 a job, that is £900 a month of work at risk. An AI receptionist costs a fraction of that. These are example numbers; use your own. Our guide to the cost of missed calls goes further.

Is an AI receptionist legal in the UK?

Yes. No UK law stops a business using AI to answer its phone. But four sets of rules apply, and getting them right takes an hour.

1. Data protection. Call transcripts and recordings are personal data under UK GDPR. You need a lawful basis, usually legitimate interests. The ICO says consent is not required for AI call transcription (ICO). Update your privacy notice, sign a data processing agreement with the provider, and set how long you keep transcripts. A data protection impact assessment is wise, because the ICO lists new uses of AI as a high-risk indicator.
2. Recording. If calls are recorded, the Investigatory Powers (Interception by Businesses) Regulations 2018 require reasonable efforts to tell callers (legislation.gov.uk). A sentence in the greeting does it.
3. Telling callers it is an AI. UK law has no general duty to disclose. But the CMA says to consider labelling AI agents so customers are not misled, and holds you responsible for what an AI says as if it were an employee. The EU AI Act requires disclosure from 2 August 2026, and reaches UK firms whose AI talks to people in the EU. Disclosure also costs little: 54% of UK adults are comfortable with an AI that says what it is, and 68% when it offers a person.
4. Your sector's rules. Solicitors stay accountable under the SRA Code for work done through others. GP practices and clinics need clinical safety sign-off (DCB0129 and DCB0160) for any AI that influences triage. FCA-regulated firms must keep a real-time human route under the Consumer Duty.

Read the full chapter: AI receptionists, GDPR and UK law. It includes wording for your greeting and privacy notice.

How to set up an AI receptionist

Most small businesses are live in an afternoon. The order matters: facts first, then your systems, then rules and authority, then the greeting, then tests, and only then your real calls. The step-by-step chapter has screenshots for each step in Line.

Templates you can copy

Greetings, AI instructions, voicemail messages, out-of-hours scripts, phone menus, receptionist scripts, follow-up texts, privacy notices and checklists. Replace everything in square brackets. The download button saves the whole set as one text file.

Write your greeting in a minute

Fill in a few details. You get a voicemail greeting, an AI receptionist opening line and a missed-call text, written to match. Nothing you type leaves your browser.

More greetings for every situation are in business voicemail greetings and receptionist scripts.

How to tell if your AI receptionist is working

Track five numbers each month. Your provider's call log should show most of them.

Also read a sample of transcripts every month. A caller who repeats themselves, or an answer that starts "I think", is a fact to add, a system to connect, or a rule to sharpen.

AI receptionists by industry

What the receptionist handles depends on the trade. Each page shows a day on the phones, the calls it takes, and the hand-offs.

• TradespeopleAn AI receptionist for trade businesses
• PlumbersAn AI receptionist for plumbing and heating businesses
• ElectriciansAn AI receptionist for electrical contractors
• BuildersAn AI receptionist for building contractors
• Carpenters and joinersAn AI receptionist for carpentry and joinery businesses
• Garages and MOT centresAn AI receptionist for garages and MOT centres
• Salons and barbersAn AI receptionist for salons and barbershops
• Clinics and practicesAn AI receptionist for clinics and practices
• Dental practicesAn AI receptionist for dental practices
• GP surgeriesAn AI receptionist for GP surgeries
• Estate agentsAn AI receptionist for estate and letting agents
• Solicitors and law firmsAn AI receptionist for solicitors and law firms
• Accountants and bookkeepersAn AI receptionist for accountancy practices
• Cleaning businessesAn AI receptionist for cleaning businesses
• Landscapers and gardenersAn AI receptionist for landscaping businesses
• Removal companiesAn AI receptionist for removal companies

Glossary

The terms you will meet when you compare providers, in plain English.

AI receptionist

Software that answers a business's calls and messages in a natural voice and does the receptionist's job: answering questions, booking appointments, looking up orders and jobs, handling complaints and updating records. It works from the same information and systems a human receptionist uses, around the clock, for a fraction of the cost. More

Virtual receptionist

A receptionist who answers your calls from somewhere other than your office. In the UK the term usually means a human answering service, such as Moneypenny or alldayPA, that answers in your business name. Some providers now use it for AI receptionists too. More

Telephone answering service

A company whose staff answer your calls in your business name, take messages and send them to you. You pay per call, per minute or for a monthly bundle of calls. More

Auto attendant (IVR)

A recorded phone menu that asks callers to press a key or say a word to reach the right person or department. It routes calls but cannot hold a conversation or answer questions. More

AI voice agent

The technology inside an AI receptionist: a speech-to-text model, a large language model that decides what to say and do, and a text-to-speech voice, connected to the phone call in real time.

MCP (Model Context Protocol)

An open standard that lets an AI agent use tools in other software. A system publishes its actions, such as finding a customer or creating a booking, through an MCP server, and the AI receptionist can call them during a conversation.

API

A way for one piece of software to read and change data in another. Most CRMs, booking systems and job-management tools have one, and it is how an AI receptionist gets the same access as your staff.

Tool (for an AI agent)

One action an AI agent is allowed to take in another system, such as checking an order or booking a slot, with rules for when it may act on its own and when a person must approve.

Call forwarding

A setting on your phone line that sends calls on to another number. It is how most businesses connect an AI receptionist or answering service without changing the number customers already have. More

Overflow answering

Answering only the calls your team cannot take: when every line is busy, or when nobody picks up within a set number of rings.

Out-of-hours answering

Answering calls that arrive when the business is closed, such as evenings, weekends and bank holidays. The most common first job for an AI receptionist.

Warm transfer

Passing a live call to a colleague after briefing them on who is calling and why, so the caller does not have to repeat themselves. A cold transfer puts the caller straight through with no briefing.

Hand-off

The moment an AI receptionist passes a conversation to a person, either by transferring the call or by sending an urgent message for a call back.

Knowledge base

The documents an AI receptionist answers from: services, prices, areas covered, opening hours and policies. Live facts, such as a customer's order or tomorrow's free slots, come from connected systems instead.

Call transcript

A written record of what was said on a call, produced by speech-to-text. Under UK GDPR a transcript is personal data, the same as a recording.

Response latency

The pause between a caller finishing a sentence and the AI starting to reply. Under about one second sounds natural; longer pauses make callers talk over the assistant.

Barge-in

The caller interrupting the AI mid-sentence. A good AI receptionist stops talking and listens, as a person would.

Containment rate

The share of calls an AI receptionist finishes without needing a person. It rises as you give the receptionist more knowledge and connect more of your systems.

Missed-call text back

An automatic text sent from the business number to anyone whose call went unanswered, inviting them to reply. It recovers callers who would not leave a voicemail. More

Every chapter of this guide

Sources and how we wrote this guide

Line wrote this guide in October 2026. Prices for other providers come from their own UK pricing pages, checked on 3 October 2026. Employment costs come from gov.uk 2026/27 rates and ONS ASHE 2025. Caller research comes from BT Business and Censuswide (September 2026), Moneypenny and Censuswide (January 2026), and Hiya (2026); where a statistic comes from a vendor, we say so. Legal points come from the ICO, the CMA, legislation.gov.uk, the SRA, the CQC and the FCA. We avoid three statistics that appear on many UK pages but have no traceable source: "85% of callers won't call back", "80% won't leave a voicemail" and "62% of calls go unanswered".