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Last updated: 04 August 2021

Best UK VoIP Providers for 2021

Listed: The Top UK VoIP Providers for Businesses

VoIP providers allow you to place incoming and outgoing calls directly through any possible device like your computer, a VoIP phone, or a regular phone that is connected to a VoIP adapter.

VoIP providers present a lot of ways to help companies of all sizes to communicate more easily and efficiently. The capabilities offered by a VoIP system changed the technology tremendously and enabled a lot of advanced communications solutions

Are you currently wasting time and resources on an outdated office phone system? Market Inspector can help you upgrade your current VoIP service solution to make your processes more efficient and effective.

There are a lot of VoIP providers on the UK market, which can make picking the right one a difficult task. That’s why we reviewed and compared the best VoIP providers in the UK.

You can find a comprehensive list of UK VoIP providers, as well as top VoIP phone brands on the market:

Providers offering these office telephone systems offer a practical and reliable solution for companies of all sizes. There are a lot of providers that offer business VoIP systems.

You can receive professional advice about the best solution for your business simply by filling in the free quote form. Our team will assist you with up to four customised quotes. Our service is totally free of charge and non-binding.

What Are the Best UK VoIP Service Providers?

UK VoIP providers offer a system that is less expensive, compared to traditional business phone systems. Switching to a VoIP phone system will automatically reduce your monthly phone costs. Additionally, VoIP technology can provide your business with bandwidth efficiency. Sounds great, right?

The list of VoIP providers below offer the best VoIP for small business (UK) that is available on the market. Some of the most valuable and useful features and packages are highlighted and presented. 

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VonageVonage logo

Vonage offers fully integrated cloud-based communications and calling possibilities with a ‘plug n play’ model, making it a great option for any sized business. The best part about this VoIP provider is that the customer has no contractual obligations. There are also no installation charges, line rental, or upfront costs.

Vonage offers you 24/7 service and Vonage Business tech support.

Vonage Business Cloud Plans
Feature Mobile Premium Advanced
Price* per month/per line (taxes and fees included) £ 17 £ 25 £ 33
Limitless calls and SMS      
Link business number to mobile device through mobile app      
Desktop App      
Team Messaging through VonageFlow      
Extended automated phone menu      
Video conferencing   ± 100 participants ± 100 participants
CRM integration      
Record calls whenever required     15 hours/month
Make group calls      
Vonage Visual Voicemail      

*These are the prices for 1 - 4 lines. The more lines you add, the cheaper the price.

3CX3cx logo

This VoIP provider is the world’s oldest communication company that offers unified communications. They already have 250,000 installations all over the world, and offer a range of different and valuable features.

This VoIP provider offers a service that is easy to deploy, install, and manage. 3CX also provides your company with integrated video conferencing at no charge. Of course, they also make sure that all of your questions and concerns are handled with their advanced customer service.

3CX offers three different plans: Standard, Pro, and Enterprise. The prices are based on the number of simultaneous calls, not the number of users/extensions.

No matter the size of your simultaneous calls, the standard licences are free for the first year.

3CX Plans
Feature Standard Pro Enterprise
Price ( per month/per line) FREE £ 4.50 £ 5.50
Limitless extensions      
Self-service provisioning      
Pick own SIP Trunk      
Mobility apps compatible on iOS and Android      
CRM integration      
Office 365 integration      
Web conferencing 25 participants 100 participants 250 participants
Call center elements      
Create standy replica      
Record and control your calls      
Standby license      
Customised logo for your IP Phone      

BTBT logo

BT is another leading VoIP provider in the UK, and operates in around 180 countries.

BT is a cloud-based phone system that offers flexibility, agility and powerful call-management features. They provide you with personal guidance in order for you to make the best choice.

There are three different cloud-based phone systems offered by BT: BT Cloud Phone, BT Cloud Voice and BT One Phone.

BT Cloud Phone is a plug ‘n’ play VoIP phone provider, which is designed for small businesses.

BT Cloud Voice is managed through an online portal where phones are the only on-site hardware. This signifies that you have lower upfront costs and installation fees.

BT One Phone acts like a mobile but thinks like a phone system. It is one device that switches between your office and mobile networks. You can manage all calls and voicemails on one mobile device.

BT Cloud-based Phone Systems
Feature BT Cloud Phone BT Cloud Voice BT One Phone
Number of users 1 - 9 5 - 250+ 5 - 500+
Package option Inclusive and limitless calls Minutes bundles and limitless UK calls Choice of limitless voice texts and flexible costs
Video conferencing      
Virtual geographic numbers      
Installation Plug & Play Self install or engineer Engineer install
Options for the future while business grows Updates automatically, add users easily, system grows together with your business Updates automatically, add users easily, Cloud-hosted system Updates automatically, add users easily, Cloud-hosted system
Professional support 24/7 helpdesk Helpdesk on weekdays from 8 am - 6 pm & 24/7 helpdesk option available 24/7 helpdesk
Payment Cost per user plus handset and one-off connection charge Cost per user plus handset, number rental and one-off connection charge Cost per user

PragmaEricsson LG logo

Pragma is a VoIP provider that is specialised in unified communications technology. The company is fully focused on Ericsson-LG’s iPECS platform and complementary technologies.

The unified communications platform iPECS aims to help organisations communicate and team up with all of their stakeholders.

This implies that your employees can work efficiently no matter where they are or what device they are on. iPECS UCP offers 2 packages for business: standard and premium.

iPECS USP Packages
Feature Standard Premium
Number of users 50 200
Instant Messaging, SMS and Note One to one One to Many
Visual Voicemail    
One-to-one video calls    
Click to call from web brower    
Manage calls from desktop    
Audio calls    
Audio Conference Manager    
Outlook synchronisation    
Video Conferencing    
MS Exchange integration group calls    
Collaboration by sharing files, programs and applications    
Record live calls    
Collaborate on the web    

MitelMitel Logo

Mitel is a VoIP provider for businesses of all sizes, offering a unified communications solutions. Mitel focuses entirely on VoIP products and therefore has a wide range of business phone systems.

The primary UK cloud business phone system solutions they offer are Micloud Connect and Micloud Flex. The big difference between the two is their integration and customisation needs.

If your company requires more advanced integration needs, then MiCloud Flex would be the best fit. For more standard basic cloud communication needs, MiCloud Connect would be the better option. Both solutions allow you to work from anywhere.

Mitels Primary Cloud Business Phone System Solutions
MiCloud Connect MiCloud Flex
Small to medium-sized business Large enterprises
Compatible with PC, MAC, iOS and Android Valuable mobility for smartphones, tablets and softphones
Audio and conferencing with web sharing options Audio and video conferencing
Collaborate with teams over different persistent workspaces Advanced collaboration tools
Business SMS Instant Messaging
CRM integration Solutions for hybrid networks
Contact center options Contact center options
IP desk phones Carry your local number everywhere
Built-in VPN Single number reach
Group and individual chats helpdesk support
Softphone and web dialer Dual mode handoff
  Multi auto attendant
  Direct inward dialing
  Dual mode handoff

RingCentralRing central logo

RingCentral is reviewed as the leader in unified communications services. The main product RingCentral offers is called RingCentral Office. This is a cloud-based VoIP system with lots of features including auto-attendants, call forwarding, multiple extensions etc.

RingCentral Office combines phone, video, meetings and messaging in one solution. This VoIP provider is not only easy to set up and manage, but also easy to use.

RingCentral Office offers 4 different packages. You can either choose to pay annually or monthly. If you go for the annual payment, you save up to 33%.

RingCentral Package Plans
Feature Essentials Standard Premium Ultimate
Price £ 25 £ 29 £ 37 £ 49.50
Limitless phone calls        
Toll-free or local number        
Toll-free minutes per month 100 1,000 2,500 10,000
Audio meetings        
Internet faxing        
Video conferencing   Up to 4 participants Up to 100 participants Up to 200 participants
Automatic recording of calls        

*These are the prices for 2 - 29 users. The prices are calculated per user per month.

8x88x8 logo

8x8 offers cloud-based communications like customer service tools, video, mobile and unified communications to businesses of all sizes.

8x8 provides its customers with four different X series packages: X2, X3, X5 and X6. The X Series packages listed below are designed for small businesses. There are also packages available for medium and large sized businesses.

X Series Packages from 8x8
Feature X2 X3 X5 X6
HD Voice quality        
Auto attendant        
Record your calls        
Media storage 1 GB 5 GB 10 GB 10 GB
Limitless calls Within 14 countries Within 32 countries Within 47 countries Within 47 countries
Call queues        
Mobile and desktop apps        
Internet faxings        
Audio & video conferencings Up to 100 participants Up to 100 participants Up to 100 participants Up to 100 participants
8x8 Analytics Essentials        
Interactive voice response        
Outbound dailing system     2,000 minutes  
Analytics for customer experience        
Survey after call        

If you are ready to invest in a good VoIP provider for your business, all you have to do is fill in the contact form above. We will then offer you up to four quotes tailored from trusted suppliers in the UK. This service is completely free of charge and with no obligations whatsoever!

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TeliqoTeliqo Logo

Teliqo is a VoIP provider that supports small to medium-sized businesses in the UK with their business communication needs. Teliqo is a hosted telecoms provider that offers flexible and tailored telephony services. This company has three different packages: bronze, silver and gold packages.

Teliqo Packages
Feature Bronze Silver Gold
Price Monthly per user Monthly per user Monthly per user
Email assistance      
User portal      
Call logs      
Ring Group      
Call queuess      
UK landlines 01,02,03 500 750 1,000
UK mobile 07 100 150 200
Phone assistance      
IVR (auto attendant)      
Record and monitor your calls      
Multiple workers can use single workstation      

BerryBerry telecom logo

Berry, headquartered in Salisbury, is an award-winning phone system company that provides business phone systems with a huge range of valuable features. They mainly focus on service and support by providing customised advice.

This VoIP provider offers iPECS cloud based systems, powered by Ericsson-LG, suiting businesses of all sizes.

iPECS cloud system allows you to collaborate and communicate through two different devices: UCE Mobile and UCE Desktop. With the UCE Mobile you can collaborate and stay in touch with colleagues while you are working on the go.

Feature UCE Mobile UCE Desktop
Use integrated presence to see if your colleagues are available Easy and intuitive Ad-hoc
Conferencing One to one One to Many
Video calling    
Instant Messaging    
Embedded softphone    
iPECS features
Feature iPECS
Auto attendant  
Voicemail and voicemail to email  
Music on hold  
Instant Messaging  
Share your screen  
Inbound and outbound call centre  
Unified communications  
Monitor your communications through analytics, call reporting and scheduled reports  
Record your calls  
Monitor your live calls  

NFONNfon Logo

NFON, headquartered in Munich, is an active VoIP provider in 14 countries and has over 30,000 customers.

The cloud-based system offered by NFON is called Cloudya. You can do business from any place, on any device. It’s easy to set-up and there are no maintenance costs charged.

The pricing for Cloudya is a little bit different from other providers because your monthly costs would be based on your active extensions.

That means you would only pay for the extensions you use. NFON allows you to add or remove features based on your business communication needs.

Cloudya features
Feature Cloudya
Payment Based on monthly usage
Communication tools Only one login, password and phone number
Installation Plug & play
Platform Any communication device, mobile-ready
Maintenance Easy to maintain
Support 24/7 helpdesk
Mobile office  
Future-proof Always up to date
Audio conferencing  
Call queues  
One-number concept  
Smartphone integration  
Number of extensions Up to 9 devices per extension
High Voice quality Certified by The Technical Inspection Association

Lily CommsLily Comms logo

This company calls itself ‘the home of digital technology’. Lily Comms is an award-winning service that provides its customers with the best tailored communications solutions. Lily Comms has two cloud-based phone system options: Lily Cloud and Lily Horizon.

The Lily Cloud phone system, suitable for all businesses, combines all the features from a traditional on-premise phone system and launches them through a cloud.

The Lily Horizon is the VoIP communications service specially designed for small and medium-sized businesses. Lily Horizon offers different fixed and mobile features which are all accessible through a web portal.

Cloud-based Phone System Options
Lily Cloud Lily Horizon
Access to features whenever you want Management of incoming and outgoing calls in a more efficient way
Easily add/remove users Dedicated 24/7 service support
Flexibility: whenever your business changes, you can also change your features Flexibility: whenever your business changes, you can also change your features
Handset with all features Change from handset to access to core network whenever required
Web, PC and smartphone interface Fixed and mobile integration
Reliable and resilient Pricing tailored to your business needs
Improved connectivity System always operates whenever there is a broadband connections
30 - 60% cost savings Integration of mobile devices into VoIP network

SipgateSipgate logo

Sipgate is one of the largest VoIP providers in Germany. They mainly focus on technology and transparency and they have more than 15 years of VoIP experience. With Sipgate’s Cloud telephony service you can just use your own number. The telephony system offered by Sipgate is called Sipgate Basic.

With Sipgate Basic you only pay for the amount of usage and there is no minimum contract required. Sipgate has a lot of extra features you can add to your Sipgate Basic Package when desired.

Sipgate Basic Pricing Plans
Feature UK Call Package EU Call Package EU Plus
Price £10 £ 15 £ 20
Contract Monthly Monthly Monthly
Landline calls      
Mobile calls      
Call package within UK      
Call package within EU     28 EU countries
Extra call package     8 non-EU countries

Focus Group

Focus Group logo

Focus Group is an award-winning company mainly providing business telephone systems. This VoIP provider has over 300 employees and provides services to 10,000 businesses. The unified communication solution they offer is Horizon. Horizon can be used by any size of business.

Horizon’s Key Features
Feature Horizon
Easy to use interface  
Record your own calls  
Administrator interface with strong managing ability  
Auto attendant  
Call parking  
Instant Group Calls  
Record your calls  
Diversion inhibitor: calls won’t be passed on and on  
Forward your calls efficiently  
Automatic call back  
Do not disturb  
Work remotely  
One number anywhere  

What Are the Top VoIP Phone Brands?

The best VoIP phone brands in the UK are Polycom, Cisco, Yealink, and Fanvil.


Cisco logo




Polycom is the international communications company that focuses on human connection and collaboration. No matter the provider you choose, Polycom will always be an excellent choice. Their phones are not only easy to use but also easy to deploy and maintain.

Polycom provides you with solutions that speed up productivity and enables unified communications on desktops worldwide. Polycom helps your employees move faster and to get down to work without losing any time. These IP Phones are suitable for every workspace.

Polycom also helps you to match the right VoIP product to your system business requirements.


Cisco, headquartered in California, is one of the most trusted brand names in the networking technology world. They offer small business communication solutions by presenting user-friendly, full-featured IP phones.

Cisco already has more than 200,000 collaborations with customers worldwide and more than 500 companies use Cisco collaboration solutions.

Yealink is a leading global provider of business communication and collaboration solutions. The Yealink VoIP phones are of high quality, affordable and highlight great solutions for both small and large businesses.

Yealink offers a number of different IP phones based on your requirements. It is definitely a great choice for businesses that need to bulk buy on a budget without having to give up on important features.

Its Conference Phone Series won the 2019 award for best VoIP Device by ITSPA (The Internet Telephony Services Providers’ Association).


Fanvil is a Chinese established VoIP desktop phone developer and manufacturer. They focus mainly on quality, style and value for money. They offer the X Series Enterprise IP phones.

X Series highlights leading voice quality and high resolution call display. Fanvil X Series also comply with bluetooth and wireless communication. In addition to that, other valuable functions are offered like hotspot.

This means that some phones are able to share the same number when they register on a server. Log in web management via mobile is another useful function. Users can simply log in to web management and change the settings from their IP Phone easily with their mobile phone by scanning a QR code.

How Can a VoIP System Benefit Your Small Business?

Every business is different, which means that every business has different needs. Choosing the right VoIP provider makes it easier for your company to achieve your business goals. Your employees can work more efficiently and they will achieve more in less time. 

There are a lot of benefits when adopting VoIP systems, here are the most important ones:

  1. A VoIP system doesn’t require any equipment or upfront cost. Get started right away without investing in the most expensive hardware or devices.
  2. Each employee can have their own virtual extension which can be reached on every connected device.
  3. VoIP systems give you flexibility because you can just add a new line for a new employee or remove one.
  4. VoIP providers allow you to work remotely by using cloud phone systems. You can take calls anytime and anywhere (when there is a good internet connection).

Frequently Asked Questions About VoIP

1. What is VoIP?
VoIP is a business telephone service where calls are made over the internet. Calls are not dependent on traditional telephone lines which it makes it cost efficient for business to make calls globally.
2. What is Hosted VoIP?
It is a form of VoIP service where a provider hosts your business VoIP equipment, servers and other services. This enables businesses eliminate the cost of investing managing a VoIP system.
3. Why Should You Choose VoIP?
In the age of digitalization, businesses are constantly looking to move services online and also cut down their operational costs. A VoIP system significantly helps cuts down business costs as calls can be made easily over the internet and reduces the dependency on traditional phone line connections.
4. What Are the Factors to Consider Before Purchase?
The main factors to consider before choosing a VoIP system are pricing, setup fees, service contract and termination fees.
5. How to Find the Best VoIP Provider?
At Market Inspector, we do the research to find the best VoIP provider in UK for you based on your requirements. You just need to fill in the form with your needs, and we will get you in touch with the best suppliers who will send you tailored quotes to choose from.
If you are ready to invest in a good VoIP provider for your business, all you have to do is fill in the contact form above. We will then offer you up to four quotes tailored from trusted suppliers in the UK. This service is completely free of charge and with no obligations whatsoever!
Get Your Quotes Now!

It only takes 1 minute

Sirin Çaki
Written by Sirin Çaki, Content Writer

Sirin is a Content Writer at Market Inspector. Her educational background lies in Business Communication and Office Management, with a focus on Media & Events. She has gained international marketing experience in France and Belgium, and has her written work published on websites like News from Wales, the Sunday Post, and Coffeebi.