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Get a UK Toll-Free virtual phone number

Let customers across UK reach you free of charge on a +44 800 toll-free line, answered by your team or your voice-AI agent. No local office needed.

Get a UK Toll-Free numberTalk to sales
UK flag

Your new number

+44 800 •••• ••••

Country code
+44 800
Number type
Toll-free (free for callers)
Cities
Nationwide, incl. London, Manchester
Region
Europe
Connect with
SIP trunk (UDP or TCP, G.711) or the Call API
Plans
Vonyx Standard or Vonyx.HD

Benefits

Why teams choose a UK Toll-Free number from Vonyx

Free to call across UK

Customers in London, Manchester and the rest of UK reach you without paying for the call.

Built to stay clean

One owner per number, verified senders only and no borrowed caller IDs: the habits that get numbers flagged are ruled out.

Ready for voice AI

Connect the number to Vapi, Retell, ElevenLabs, LiveKit or any SIP client, or stream calls to your agent over the Call API.

Outbound and inbound

Place calls from your +44 800 number and receive calls on it, through the same SIP trunk.

Scales with your team

Add or release UK numbers as campaigns and teams grow, with no hardware and no long contracts.

Answer from anywhere

Take UK calls on your PBX, softphone, dialer or AI agent, wherever your team sits.

Why a clean number matters in UK

When a call shows up as “Spam Likely” or an unknown foreign number, most people don't answer. Shared and recycled numbers get flagged, and once a number is flagged every call from it suffers.

Vonyx +44 800 numbers are run to stay clean, so your outreach in UK has the best chance of being answered.

  • One owner per number, never shared with other senders
  • Every account verified before its first call
  • Calls can only show a number you own

How it works

How to get a UK Toll-Free virtual number

  1. 1

    Create an account

    Sign up in the Vonyx console and pass KYC. Every account is verified before its first call.

  2. 2

    Buy a +44 800 number

    Pick an available UK Toll-Free number in the console.

  3. 3

    Create a SIP trunk

    Get a username and password your PBX, dialer or AI platform signs in with.

  4. 4

    Start calling

    Point your agent at the trunk, or place calls through the Call API.

Features

Everything included with your UK Toll-Free number

Built for sales teams, contact centres and voice-AI agents.

SIP trunking

Connect your UK Toll-Free number over UDP or TCP with digest login. Audio is G.711 μ-law or A-law.

Call API

One request places a call and streams its audio to your WebSocket, with call status sent to your webhook.

Agent platform guides

Step-by-step setup for Vapi, Retell, ElevenLabs, LiveKit, Pipecat, Ultravox, Asterisk, FreeSWITCH, 3CX and Kamailio.

Call logs and recordings

Every UK call on record in the console, with answer rates per number.

AI noise cancellation

Clearer audio on calls from noisy rooms and call floors.

Verified caller ID

Calls can only show a number you own, so your +44 800 caller ID can't be spoofed through your account.

FAQ

UK Toll-Free virtual number questions

What is a UK Toll-Free virtual phone number?

A UK toll-free virtual number is a cloud +44 800 number that callers across UK reach at no cost to them. It runs over the internet, so your team, IVR or voice-AI agent answers it from anywhere through Vonyx.

Can I get a UK Toll-Free number without an office in UK?

Yes. Vonyx provisions UK numbers remotely, so you don't need a local office or hardware. Some number types in UK need address or business documents, and our team tells you which before you buy.

Will my UK Toll-Free number be marked as spam?

Vonyx keeps numbers clean by design: each number has one owner, every account is verified before its first call, and calls can only show a number you own. Spam labels are set by carriers and apps, so no provider can promise a number is never flagged, but these rules remove the usual reasons a number gets flagged.

Can I use a UK Toll-Free number with my dialer or voice-AI platform?

Yes. Point any SIP client at a Vonyx SIP trunk (UDP or TCP, username and password), with step-by-step guides for Vapi, Retell, ElevenLabs, LiveKit, Pipecat, Asterisk and 3CX. Or skip SIP and use the Call API, which streams call audio to your WebSocket.

Which plans can I get a UK Toll-Free number on?

Vonyx Standard, for clean numbers and SIP trunking, or Vonyx.HD, which adds 16 kHz wideband audio for voice AI. You see UK rates in the console before you buy, or our team can send a quote.

How quickly can I start calling with a UK Toll-Free number?

Once your account passes KYC, you can buy a number in the console and route it to your SIP trunk straight away. Number types that need extra documents in UK take longer, and we tell you up front.

Coverage

Virtual numbers in 70 countries

Ready to call UK?

Get a +44 800 number in the console and start calling once your account is verified.

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