Business VoIP Comparison Updated 2026
Business VoIP Providers in the UK (2026)
Choosing a phone provider is a big decision. The right one keeps your business running. The wrong one costs you calls, money, and time. This is our expert comparison of the UK's leading business VoIP providers, written by a UK VoIP specialist who deploys these systems every day, not a generic review site.
At a Glance:
Key Facts: 2026 Telecommunication Snapshot
Four things every UK business should know in 2026
January 2027
The deadline for the UK PSTN switch off. Traditional phone lines are being retired, and every business on analogue or ISDN needs a plan.
National Mandate
Since 2014
The VoIP Shop has helped UK organisations move to cloud communications, across the public sector, healthcare and businesses of every size.
Decade of Experience
2x
Openreach is raising legacy line rental in three steps through 2026, roughly doubling the cost of staying on copper before the switch off.
Cost of Waiting
24/7 UK support
Real people in the UK, day or night. One of the biggest reasons businesses leave their current provider for us.
100% UK Based Support
A Different Kind of Review
Why Trust Our Rankings?
Let us be straight with you. The VoIP Shop is a VoIP provider. We are in this comparison, and you will find us ranked fifth, behind providers we genuinely rate above us for certain businesses.
We are telling you that upfront because most "best provider" pages will not. Many are run by affiliate sites paid to push whichever brand bids highest, or by generic review blogs that have never set up a phone system in their lives.
We have. Since 2014, we have helped UK organisations plan, deploy and run business communications. VoIP, hosted phone systems, SIP, Microsoft Teams telephony and, more recently, AI powered services. We have migrated businesses off ageing PBX kit, ported numbers, fixed call quality problems and supported teams through the PSTN switch off.
That hands on experience is what shapes this guide. We are not claiming to be a neutral judge. We are a specialist giving you an honest, informed assessment of the market, including where rivals beat us.
How We Compared Business VoIP Providers
Choosing a provider on marketing claims alone is risky. So we assess every provider in this guide against the same framework, using two scores.
Metric A
VoIP Expert Score™
Measures how good a provider is today, across six areas. Each area carries a weighting based on what matters most to a real business.
Metric B
UK Future Ready Score™
A great platform today can fall behind fast. This score (out of 10) measures how prepared a provider is for upcoming technological updates.
| Category | What we look at | Weighting |
|---|---|---|
| Call Quality | Voice clarity, call stability, network performance, resilience | 20% |
| Features and AI | Auto attendant, call recording, CRM integration, mobile apps, analytics, AI tools | 20% |
| Pricing and Value | Contract flexibility, transparency, what is included, long term value | 20% |
| Ease of Use | User experience, admin, deployment simplicity | 15% |
| Customer Support | Responsiveness, technical expertise, UK based availability | 15% |
| Reliability and Uptime | Infrastructure, uptime commitments, disaster recovery | 10% |
UK Future Ready Score™: Long-term Readiness Indicators
We evaluate the long-term readiness of each provider against the following key indicators:
Our Editorial Pledge
Our promise on scoring: every provider is assessed consistently, and scores are reviewed periodically to reflect new features and market changes. We are a provider ourselves, so we hold ourselves to the same scoring and rank where it lands us.
Direct Overview
Quick Comparison: Top UK Business VoIP Providers (2026)
Short on time? Here is how the leading UK business VoIP providers stack up side-by-side. Scroll horizontally to view columns. Highlighting The VoIP Shop based on our UK customer support and dedicated features.
| # | Provider | Best for | From (excl VAT) | Expert Score | Future Ready | AI Features | UK Support | Teams Integration | Free Trial |
|---|---|---|---|---|---|---|---|---|---|
| 1 | RingCentral | Best overall | £23 - £29 | 94/100 | 9.6/10 | Advanced | Enterprise Only | Yes | Yes |
| 2 | Gamma Horizon | UK SMEs | Custom Quote | 92/100 | 9.2/10 | Moderate | Yes | Yes | Check Directly |
| 3 | 8x8 | Microsoft Teams | Custom Quote | 91/100 | 9.4/10 | Advanced | Enterprise Only | Yes | Yes |
| 4 | Dialpad | Remote teams | £12 - £122 | 89/100 | 9.5/10 | Advanced | Check Directly | Yes | Yes |
| 5 | The VoIP Shop | UK support and AI | £13.95 - £20 | 89/100 | 9.5/10 | Advanced | Yes 24/7 | Yes | Check Directly |
| 6 | NFON | Multi site | POA | 88/100 | 9.0/10 | Moderate | Check Directly | Yes | Check Directly |
| 7 | bOnline | Low Budget | £7 - £16.95 | 87/100 | 8.5/10 | Basic | Yes | Check Directly | Check Directly |
| 8 | Vonage | Contact centres | £10 - £25 | 86/100 | 8.8/10 | Advanced | Check Directly | Yes | Yes |
| 9 | Voipfone | Low cost UK | £5 - £20 | 89/100 | 9.0/10 | Basic | Yes | Check Directly | Check Directly |
| 10 | Virtual Landline | Virtual Number | £4.50+ | 90/100 | 8.8/10 | Basic | Yes | Check Directly | Check Directly |
Deep-Dive Reviews
The Best Business VoIP Providers in the UK (Detailed Reviews)
Here is our assessment of each provider. We have set them out in score order, with an honest note on who each one suits best, and when it beats us.
Ranked #1
RingCentral: Best Overall
Best for: Best Overall
- VoIP Expert Score: 94/100
- Future Ready: 9.6/10
- From: £23
RingCentral is the most complete business communications platform in this guide, and the one most others are measured against. Its RingEX platform brings calls, video meetings, messaging and SMS into a single app, then sits on top of a global network with strong reliability and uptime. For a business that wants one well supported platform to run everything, and that has the budget to match, it is a deserving number one.
What stands out is breadth. You get a full cloud phone system with auto attendant, call queues, call recording and voicemail to email, plus video meetings and team chat in the same place. It connects to over 300 business apps, including Salesforce, HubSpot, Microsoft 365 and Google Workspace, which makes it a natural fit for sales and support teams that live inside a CRM. For larger operations there is a separate contact centre product, RingCX, when you outgrow standard call handling.
Key Features:
- unlimited UK calling
- auto attendant and IVR
- call recording
- call queues
- video meetings
- team messaging
- mobile and desktop apps
- 300+ integrations
- and analytics across all of it
Pricing & Plans
UK plans start from around £12.99 per user per month and rise through mid and top tiers to roughly £29.99, depending on features and billing.
There is a 14 day free trial. Watch the add ons, as some AI and contact centre features sit on separate subscriptions.
AI Features Summary
RingCentral has mature AI built in, including live call transcription, AI generated meeting and call summaries, and AI noise reduction on calls. An AI Receptionist is available as an add on to route calls and capture leads automatically.
Ranked #2
Gamma Horizon
Best for: UK SMEs
- VoIP Expert Score: 92/100
- Future Ready: 9.2/10
- From: POA
Gamma Horizon is one of the strongest UK built cloud phone platforms, and a sensible default for a small or medium business that wants something reliable without complexity. Gamma owns a large part of the UK network it runs on, which is part of why Horizon has a solid reputation for call quality and stability. It is widely deployed across UK SMEs, and it is built around how UK businesses actually work.
The platform covers the essentials well. You get a full hosted phone system with call management, an easy to use online portal, and the Horizon mobile and desktop apps so your team can work from anywhere. It suits businesses that want a dependable phone system they rarely have to think about, rather than the longest possible feature list.
Key Features:
- UK landline and mobile calling
- call recording
- hunt groups and call queues
- auto attendant
- mobile and desktop apps
- and a straightforward management portal
Pricing & Plans
Gamma Horizon is sold through partners and resellers rather than at a single public price, so the cost is provided on request. In practice it sits in line with other UK SME platforms on a per user per month basis.
AI Features Summary
Horizon is lighter on native AI than the AI first platforms in this guide. Some AI driven features are available, but if advanced AI is central to your plans, Dialpad or our own AI suite will give you more out of the box.
Ranked #3
8x8
Best for: Microsoft Teams
- VoIP Expert Score: 91/100
- Future Ready: 9.4/10
- From: POA
8x8 pairs strong Microsoft Teams integration with enterprise grade voice and genuine global reach, which makes it a serious option for Microsoft centric and international businesses. It has been in the communications industry for decades and serves millions of business users worldwide, so the platform is mature and well proven.
Its standout strength is international calling. Higher tiers include unlimited calling to dozens of countries, which can save a great deal for teams that call abroad regularly. Add solid Teams integration, a single platform for voice, video, chat and contact centre, and strong security credentials, and you have a capable all rounder for larger or multi country operations.
Key Features:
- unlimited calling to many countries
- Microsoft Teams integration
- voice, video, and chat in one platform
- contact centre options
- auto attendant
- analytics
- and global numbers
Pricing & Plans
8x8 has moved to a quote based model, so you request a tailored price rather than picking a plan online. UK resellers list plans from around £8.49 per user per month, with higher tiers for unlimited international calling.
AI Features Summary
8x8 offers AI mainly within its contact centre and analytics, including speech analytics and AI assisted call summaries on the appropriate tiers.
Ranked #4
Dialpad
Best for: Remote teams
- VoIP Expert Score: 89/100
- Future Ready: 9.5/10
- From: £22
Dialpad takes an AI first, mobile first approach, which makes it a natural fit for remote and hybrid teams. Where some providers treat AI as an add on, Dialpad builds it into the everyday calling experience, so the intelligence is there on every call without extra setup.
The platform is clean and quick to learn, which matters when your team is spread across homes and offices. You get a full cloud phone system with calling, messaging and video, strong mobile apps, and real time analytics that help managers keep an eye on a distributed team. For a modern team that values a tidy, intuitive interface over a sprawling feature set, it is one of the easiest platforms to adopt.
Key Features:
- unlimited calling
- voicemail and auto attendant
- custom call routing
- mobile and desktop apps
- video and audio meetings
- real time analytics
- and CRM integrations
Pricing & Plans
UK pricing starts at £22 per user per month on the Standard plan, £28 on Pro, and Enterprise is priced on request.
AI Features Summary
This is Dialpad's headline strength. It offers real time call transcription, AI generated post call summaries with action items, and live sentiment and coaching tools, built in across plans rather than sold separately. For teams that want AI working on every call from day one, it is one of the best in this guide.
Ranked #5
The VoIP Shop
Best for: UK support and AI
Your Host Provider
- VoIP Expert Score: 89/100
- Future Ready: 9.5/10
- From: £13.95 to £23.99
This is where we fit, and we will be straight about it. We are not the largest platform in this guide, and we do not pretend to be. What we offer is UK based expertise, genuinely hands on support, and one of the strongest AI communications line ups of any provider here. For many UK businesses, that practical help matters more than the longest feature list.
We have supported UK organisations since 2014, across the public sector, healthcare and businesses of every size. We help you choose the right system, port your numbers, migrate off old PSTN and ISDN lines, and keep everything running afterwards. Our support team is UK based and available 24/7, which is one of the main reasons businesses move to us from larger providers.
Key Features:
- unlimited UK landline and mobile calls
- 40 plus phone system features
- call recording
- call queues
- IVR
- hunt groups and call forwarding
- CRM integrations
- mobile and desktop apps
- a free desk phone on all plans
- business broadband
- Microsoft Teams telephony
- and 24/7 UK based support
- We are also a 3CX Gold Partner
Pricing & Plans
Three plans, all per user per month. Standard Voice from £13.95, Premium AI £16.95, and Ultimate AI plus CRM £23.99, with a free desk phone included.
AI Features Summary
This is our strongest area. Our AI suite includes an AI Receptionist, AI Voice Agent, AI Answering Service and AI Cloud Phone System, plus AI call and text transcription and AI call summaries. Together they help you catch more calls, cut admin, and offer service beyond office hours, which is a genuine point of difference from most providers in this list.
What we do well:
- 24/7 UK based support
- Consultative onboarding and migration
- Number porting and PSTN switch off support
- Microsoft Teams telephony
- Business grade fibre broadband
Our AI Suite:
- AI Receptionist
- AI Voice Agent
- AI Answering Service
- AI Cloud Phone System
- Intelligent call routing and automated customer engagement
Alternative Contenders
Also Reviewed: Other Prominent UK Providers
Five more providers worth knowing about, each particularly strong in its own specific operational area.
Best for Multi-Site Organisations
NFON
NFON is a cloud PBX platform with a good reputation for multi site and growing businesses. Worth a look if you run several locations and want one consistent system across all of them.
- VoIP Expert Score: 88/100
- Future Ready: 9.0/10
- From: Quote
Best for Value
bOnline
bOnline targets startups and micro businesses with a low entry price and the core features most small teams need. A sensible option if budget is the main driver.
- VoIP Expert Score: 87/100
- Future Ready: 8.5/10
- From: £7
Best for Contact Centres
Vonage
Vonage is an established global brand with strong contact centre features and developer friendly APIs. Best suited to businesses with heavier customer service needs.
- VoIP Expert Score: 86/100
- Future Ready: 8.8/10
- From: £10
Best for Low Cost UK Calling
Voipfone
Voipfone is a long running UK provider known for simple, low cost calling and UK based support. A solid choice for smaller UK businesses watching costs.
- VoIP Expert Score: 89/100
- Future Ready: 8.9/10
- From: £5
Best for Numbers and eSIM
Virtual Landline
Virtual Landline focuses on UK numbers and eSIM, which suits remote teams and startups that need a professional UK number quickly without a full phone system.
- VoIP Expert Score: 90/100
- Future Ready: 8.8/10
- From: £4.50
Customer Matchmaker
Which VoIP Provider Is Right for Your Business?
The best provider depends on your business, not on who sits at the top of a list. Here is where each one fits.
Gamma Horizon
Reliable, simple to run and good value. A strong default for a UK SME that wants a solid phone system without fuss. If you want hands on UK support and AI features alongside it, that is where we come in.
Dialpad
AI first and mobile first, so your team gets the same experience at home, in the office, or on the move.
8x8
If Teams is already the hub of your business, 8x8 plugs straight in and adds proper business voice on top.
Vonage
Built for heavier customer service needs, with strong contact centre features and developer friendly tools.
NFON
One consistent system across every location, which keeps things simple as you grow.
The VoIP Shop
If you want AI receptionists, AI voice agents and automated answering working alongside real UK support, this is our strongest area.
The Next Frontier
AI in the Future of Business Communications
AI is changing how businesses handle calls. Most comparison pages barely mention it, which is a problem, because this is where a lot of the value now sits. Here is what matters in plain terms.
AI Receptionists
An AI receptionist answers and routes calls automatically, day or night. It means fewer missed calls and no caller left waiting, even outside office hours.
AI Voice Agents
A voice agent handles conversations in natural language. It can answer common questions, take details and pass callers on, freeing your team for the calls that need a human.
AI Call Summaries
AI writes up calls for you. That cuts admin, keeps clean records and helps with compliance and training.
Call Routing
AI sends each caller to the right person first time, and shows you what is happening across your calls so you can spot problems early.
Why AI matters for your business:
Exclusive Capability
The VoIP Shop Dedicated AI Suite
The VoIP Shop AI suite: AI Receptionist, AI Voice Agent, AI Answering Service and AI Cloud Phone System. This is where we focus, and it is a genuine point of difference from most providers in this guide.
Explore our native services:
Critical UK Deadline
January 2027
Traditional copper-based phone lines are retiring nationwide. This switch-off is a hard commercial deadline for all UK businesses.
Urgent Compliance
The PSTN Switch Off and What It Means for Your Business
- Check which of your lines and services run on PSTN or ISDN
- Make sure your broadband can support digital voice
- Plan for business continuity during the move
- Check anything else on the line, such as alarms, lifts, door entry and card machines
- Choose a VoIP provider and migrate in good time, not at the last minute
* A short, practical checklist of everything above is part of our buyer's checklist below, and our team can walk you through it on a call.
Buyer Traps
Common Mistakes Businesses Make When Choosing a VoIP Provider
After years of helping businesses switch, the same mistakes come up again and again. Avoid these traps.
Pain Points solved
Why Businesses Switch VoIP Providers
When businesses come to us, they usually leave their old provider for one of these reasons.
"If any of these sound familiar, it may be time to review your options."
FAQ
Written By | About the Author
Kully has over 15 years of experience in the VoIP and telecoms industry. Drawing on a background in telecoms sales and leadership, he provides expert, honest advice on VoIP and cloud telephony solutions. As a lead author for The VoIP Shop, Kully helps businesses understand and adopt modern communication technologies
The VoIP Shop is a UK VoIP provider, and we are included in this comparison. Our assessments are based on real-world experience, the same scoring framework applied to every provider, and a transparent set of criteria. We rank ourselves where the scoring places us, and we say clearly when another provider is the better fit. Scores are reviewed periodically to reflect product updates and market changes.
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