Local numbers
Create a local contact in London, Manchester, Edinburgh, Cardiff or Belfast, among other locations in the catalog.
Business communications in the United Kingdom
Your UK number.
Your way to call.
Make and receive business calls with a UK number and the tools that suit your team. Use IllyVoIP apps, connect your existing SIP phone system or build calling into your application.
Local · National · Mobile · Freephone numbers
United Kingdom+44A familiar number. More ways to answer.
Connect with customers in the United Kingdom
Closer to customers.
Wherever work happens.
Give UK customers a familiar number to call. Keep sales conversations, customer enquiries and follow-ups moving with business voice that fits the way your team works.
- UK phone numbers
- Your business contact
- Inbound & outbound voice
- Enquiries, sales & follow-ups
- Apps & webphone
- Desktop, mobile & browser
- SIP trunks
- Your existing phone system
- Voice API
- Calling in your application
UK virtual phone numbers
A local contact.
Or a UK-wide presence.
Choose the kind of UK virtual number that fits your business—from a geographic contact in the area you serve to a national or freephone number for a wider audience.
National numbers
Use a UK-wide number that is not tied to one city. A practical contact for a business with customers across the country.
Mobile numbers
Explore the UK mobile-number category for another way to present your business contact.
Freephone numbers
Give incoming customer enquiries a dedicated freephone contact through the UK Toll-free category.
UK business calling & SIP trunks
Every enquiry.
Every follow-up.
Be there when UK customers call, and reach out when the next conversation is yours to start. Use inbound numbers and outbound voice for customer support, sales and everyday business calling.
Connect a compatible PBX or SIP phone system to IllyVoIP. Keep your existing calling tools while using SIP trunks and voice termination for supported UK destinations.
Be there when they call
UK customers→Your team
Start the next conversation
Your team→UK destinations
Incoming enquiries. Outgoing opportunities.
Voice API for UK calling
Your application.
A UK voice connection.
Turn an incoming enquiry into a guided conversation. Greet callers, collect input and transfer calls through the Voice API. Connect supported inbound and outbound call workflows to your application with programmable actions and webhooks.
Explore the Voice APIYour customerYour application
Voice API
GreetListenConnect
A call flow built around your business
Made for the way you work
The right tools.
For every conversation.
Support customers, keep your team connected and build more into your business calling.
A number for a distributed team
Give UK customers one business contact while your team works with IllyVoIP apps for Windows, iOS and Android, or the browser webphone.
Explore the appsEnquiries with a clear destination
Organise customer calls with queues, agent workspaces and voicemail, so your team has the tools to handle incoming enquiries.
Explore contact centerMore visibility into business calls
Review call activity and manage outbound access with country, prefix and maximum-rate controls. Keep your calling setup aligned with your business.
Explore fraud controlsMake more possible with AI voice agents.
Build automated conversations into your customer experience, alongside the tools your team uses every day.
Another way to connect.
Add outbound SMS to your customer communication with UK destination coverage. Explore messaging alongside your business calling.
Explore SMSUK business calling
A few things
worth knowing.
Which UK business numbers can I choose?
IllyVoIP lists Local, National, Mobile and Toll-free categories for the UK. Explore available numbers in your account and choose the contact that fits your business.
Can I make and receive calls with IllyVoIP?
Yes. Use a UK number for incoming enquiries and outbound voice for calls to supported UK landline and mobile destinations.
What is the difference between a local and a national number?
A local number carries a geographic area code, such as London’s 020. A national number, such as 0333, gives your business a UK-wide contact without a city area code.
Can I use my existing PBX or SIP phone?
Yes. Connect a compatible SIP setup to IllyVoIP, or use IllyVoIP apps and the webphone for your team’s business calling.
Can I use the Voice API for UK calls?
Yes. Build call workflows with programmable actions and webhooks for supported UK destinations and eligible incoming numbers.
Start with IllyVoIP
A UK number.
A connection that fits.
Create your account and explore the services that fit your business.