Best VoIP providers UK (2026): how to compare
There is no single best VoIP provider for every UK business. The right one depends on your team size, the features you need and how you want to be supported. Most UK VoIP plans cost around £8 to £15 per user per month, include UK calls and apps for mobile, web and desk phones, and arrange free number porting. This guide gives you the criteria to compare them fairly.
How to choose a VoIP provider
The best way to choose is to start from your own requirements rather than a ranked list, because the provider that suits a 3-person startup is rarely the one that suits a 200-seat contact centre. Work out three things first: how many people need a phone, what call handling you actually use (a simple menu, ring groups, queues, recording), and how much in-house IT support you have to lean on.
With that clear, you can compare providers on like-for-like terms. A capable provider for a small UK business will give you inclusive UK landline and mobile minutes, an app for every device, an auto-attendant so callers reach the right person, call recording, and free porting of your existing numbers. Bigger or more complex teams will also weigh up call queues, reporting, CRM integration and AI call features.
Two practical filters cut the list down quickly. First, contract length: short or rolling terms give you room to change your mind, whereas long lock-ins suit only businesses certain of their numbers. Second, support: a UK-based team that answers the phone matters more than most people expect when something goes wrong on a Monday morning. Price is important, but the cheapest plan is a false economy if the features you rely on sit behind expensive add-ons.
What to look for in a VoIP provider (comparison table)
Use this checklist as a scorecard when you compare providers. A strong fit for a UK small business will tick most of these. Treat anything missing as a question to ask before you sign, not a dealbreaker on its own.
| Criterion | What good looks like | Why it matters |
|---|---|---|
| Inclusive UK calls | UK landline and mobile minutes bundled in the monthly price | Avoids surprise per-minute charges on your bill |
| Apps and devices | Mobile app (iOS and Android), web softphone, IP desk phones all supported | Staff can work from the office, home or on the move on one number |
| Call handling | Auto-attendant or IVR, ring groups, call queues, business-hours routing | A small team can look and run like a bigger one |
| Call recording and transcription | Recording included, with AI transcription and summaries as an option | Useful for training, compliance and capturing details |
| Number porting | Free porting of 01, 02, 03 and 0800 numbers | You keep your existing number when you switch |
| CRM integration | Logs calls and notes into your CRM automatically | Saves admin time and keeps records tidy |
| AI options | AI receptionist or AI call features available | Answers and routes calls 24/7 without extra staff |
| UK support | UK-based help by phone and email | Faster, clearer resolution when issues arise |
| Contract length | Short or rolling terms available | Flexibility if your needs change |
| Switch-off readiness | Genuine cloud VoIP, ready for 31 January 2027 | Future-proof once the old PSTN network retires |
The types of UK VoIP provider
It helps to understand the shape of the market, because providers fall into a few broad types and each suits a different kind of business. Knowing which type you are talking to makes the comparison clearer.
Big UCaaS platforms. These are large, established unified-communications providers, often international, that bundle calling, video meetings, messaging and contact-centre tools. They are very capable and suit larger or globally spread organisations. The trade-off can be more complex pricing, feature tiers you may not need, and support that is not always UK-based.
UK telecoms specialists. These are providers with deep roots in UK telephony and number ranges, frequently sold through resellers and partners. They are reliable and well understood by UK IT firms. They tend to focus on the telephony side rather than the wider collaboration suite.
AI-native cloud providers. A newer group builds the phone system around modern features such as call transcription, summaries and AI voice agents, while still offering the full set of business phone tools. Voxora sits in this group: a UK cloud phone system with apps for mobile, web and desk phones, an AI Receptionist that answers and routes calls 24/7, free number porting, CRM integration and a reseller and white-label model for agencies and MSPs. The point of the categories is not that one type is best, but that the type should match how your business actually works.
Typical UK VoIP pricing
UK VoIP pricing clusters in a predictable range, which makes it easy to spot an outlier. A standard per-user business plan usually lands at around £8 to £15 per user per month. Lighter virtual-line plans aimed at sole traders and very small teams can start lower, while plans loaded with AI features, advanced call-centre tools or large included minute bundles sit higher.
| Plan type | Typical UK market price | Best suited to |
|---|---|---|
| Virtual line / basic | From around £5 per user per month | Sole traders and mobile-first new businesses |
| Standard business | Around £8 to £15 per user per month | Most UK small and medium businesses |
| Advanced / AI / contact centre | Higher, varies by features | Teams needing queues, reporting or AI agents |
Two things move the real cost away from the headline figure. First, whether UK landline and mobile minutes are genuinely inclusive or charged per minute on top. Second, add-ons: extra number ranges, call recording storage, integrations or AI features can be bundled or sold separately. Setup and number porting are usually free, and there is no per-line hardware to buy as with old systems. Voxora does not publish a fixed per-user figure here because the right plan depends on your team and features, so use the CTA below for a tailored quote.
Questions to ask before you sign
A short list of direct questions will reveal more than any marketing page. Ask each provider on your shortlist the same questions so you are comparing properly.
- Are UK landline and mobile minutes included, or charged per minute? This is the single biggest driver of your real monthly cost.
- Can you port my existing 01, 02, 03 or 0800 number, and is it free? Confirm number types and timescales so you do not lose your number.
- What is the minimum contract term, and what happens if I add or remove users? Look for flexibility as your headcount changes.
- Is support UK-based, and how do I reach a real person? Check the channels and the hours.
- Which features are included versus bolt-on? Pin down call recording, CRM integration and any AI features specifically.
- How do you handle the 2027 switch-off and any connected devices? A good provider will explain porting and any failover options plainly.
Run the same scorecard and questions across two or three providers and the best fit for your business usually becomes obvious. The aim is not the cheapest or the biggest name, but the one whose pricing, features and support match how your team works.
Frequently asked questions
How much does a VoIP provider cost per user in the UK?
Most UK VoIP providers charge roughly £8 to £15 per user per month for a standard business plan, with simpler virtual-line plans starting lower and feature-rich or AI plans sitting higher. Setup and number porting are usually free. Always check whether UK landline and mobile minutes are inclusive, as bolt-on call charges can change the real monthly figure.
What should I look for when choosing a VoIP provider?
Look for inclusive UK calls, apps for mobile, web and desk phones, an auto-attendant, call recording, free number porting, CRM integration and UK-based support. Check the contract length and whether the provider is ready for the 31 January 2027 PSTN switch-off. AI features such as call transcription or an AI receptionist are increasingly worth weighing up.
Are UK VoIP providers better than international ones for small businesses?
It depends on your needs. Large international platforms are very capable and suit bigger or globally spread teams. UK-focused providers often suit smaller UK businesses better because they offer simpler pricing, UK-based support, local number ranges and features sized for small teams rather than enterprise. The right answer is the one that matches your size and priorities.
Do I need to change my phone number to switch VoIP provider?
No. You can keep your existing business number through number porting, which your new provider arranges for you. This applies to geographic 01 and 02 numbers as well as 03 and 0800 numbers. Porting is typically free and usually completes within a few working days to about two weeks depending on the number type and your current provider.
Is my VoIP provider ready for the 2027 switch-off?
Any genuine cloud VoIP provider is already built for the world after the 31 January 2027 PSTN and ISDN switch-off, because VoIP runs over the internet rather than the old copper network. When comparing providers, you do not need to ask whether they are switch-off ready, but you should confirm they can port your existing numbers across before your old lines are retired.
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