10 Best Business VoIP Providers in the UK (2025 Reviews & Comparison)
Last Updated: December 2025 | Author: The VoIP Shop Editorial Team
Why rely on outdated copper landlines? The best UK VoIP services now deliver enterprise-grade features for a small-business-friendly price.
Cloud-based telephony (VoIP) is no longer just an "option"—with the 2027 PSTN Switch-off looming, it is the new standard for British business. But that doesn't mean choosing the right provider is easy.
Modern VoIP systems offer far more than just voice calls. The top contenders now bundle video conferencing, mobile apps, and CRM integrations into a single platform. The competition between vendors like RingCentral, Gamma, and 3CX is fierce, making it hard to know which features you actually need and which are just marketing fluff.
If you are looking to set up a reliable business calling system, we are here to help. We have compared the leading platforms against our own managed solutions to give you an honest, transparent breakdown of the UK market.
Why You Can Trust The VoIP Shop?
Unlike generic tech blogs that review everything from toasters to laptops, we specialize in one thing: Business Telephony.
We don't just write about VoIP; we deploy it. We support thousands of UK businesses every day, from local GP surgeries to high-growth startups. But don't just take our word for it—our reputation is built on verified client feedback:
- Google Reviews: Rated 5/5 by UK Business Owners.
- Trustpilot: Consistently rated "Excellent" for support and reliability.
- UK Expertise: We operate strictly in the UK market, meaning we understand local challenges like porting BT numbers and broadband stability.
Read on for our evaluations of the leading business VoIP services and what to consider before you choose one.
Quick Comparison: Top 10 UK VoIP Providers (2025)
Don't have time to read the full reviews? We’ve tested and compared the top 10 VoIP providers to help you make a quick decision. Here is how the market leaders stack up:
| Provider | Best For | Starting Price | Trust Score | Key Feature |
|---|---|---|---|---|
| 1. The VoIP Shop | UK Small Businesses | £12.95/mo | 5/5 | Dedicated UK Support & Free Hardware |
| 2. Vonage | Growing Startups | £12.50/mo | 4.5/5 | 99.999% Uptime Guarantee |
| 3. 3CX | IT Experts / DIY | £15.00/mo | 4.4/5 | Self-Hosted Flexibility |
| 4. Gamma Horizon | Microsoft Teams | £20.00/mo | 4.3/5 | Rock-solid Network Infrastructure |
| 5. 8x8 | Call Centres | £19.00/mo | 4.3/5 | Global Calling Features |
| 6. Virgin Media | Broadband Bundles | £25.00/mo | 4.3/5 | High-Speed Fibre Integration |
| 7. BT | Brand Loyalty | £19.99/mo | 4.0/5 | Trusted Household Name |
| 8. RingCentral | Large Enterprises | £20.00/mo | 4.0/5 | Deep CRM Integrations (Salesforce) |
| 9. 4Com | Premium Hardware | £20.00/mo | 4.8/5 | "HiHi" Touchscreen Phones |
| 10. SureVoIP | Technical Users | £11.00/mo | 2.2/5 | Advanced Developer Features |
Our Top Picks by Category
If you are looking for a specific use case, here are our editorial winners from the top 10:
- 🏆 Best Overall for UK SMEs: The VoIP Shop – Unbeatable value with local support and included hardware.
- 🌍 Best for Global Enterprise: RingCentral – The most powerful feature set for teams over 50 users.
- 💻 Best for Microsoft Teams: Gamma Horizon – Seamless integration for businesses already using Microsoft 365.
- 📞 Best for Hardware: 4Com – Ideal if you want premium, tablet-style desk phones (HiHi).
- 🔧
Best for Developers:
SureVoIP – Great for technical teams who need granular control over SIP trunking.
They also offer a variety of VoIP Pricing Plan to suit different businesses.
To choose the best business VoIP provider for you, it is important to compare their features and pricing plans. You should also read customer reviews to get an idea of their service quality.
The Benefits of Choosing a Top UK VoIP Provider for Your Business Communications.
- Experience Reliable and Efficient Service with Top UK Providers
- Access Cutting-Edge Technology and Innovation in the Communication Industry
- Increase Productivity and Collaboration with Advanced Communication Features
- Ensure Security and Compliance with GDPR Regulations and Data Protection Measures
- Cater to All Your Communication Needs in One Place with Customized Solutions
- A Robust Infrastructure and Network Coverage Across the UK
- Dedicated Support and Customer Service Teams to Ensure Smooth Operations
- Bespoke Solutions Tailored to Your Business Needs
- Cutting-edge Security Features to Protect Your Confidential Information from Cyber Threats
Top 10 Business VoIP Providers UK List
We have tested these platforms based on call quality, ease of use, UK-based support, and value for money.
Here is our transparent breakdown of the UK market.
Our team is readily available to help you, Monday to Friday, from 9:30 am to 5:30 pm. Call us at 01163500215
1. The VoIP Shop - Best for UK Small Businesses
Best For: SMEs needing a "Done-For-You" solution with local support. Starting Price: £12.95 per user/month.
As a premier VoIP service provider in the UK, The VoIP Shop takes the lead in offering exceptional business VoIP services. They offer many features and plans to suit your needs, including unlimited calling, video conferencing, and mobile apps. The VoIP Shop's VoIP phone system is a cloud-based system that is easy to use and manage. It offers a wide range of features, including Unlimited calling within the UK and to selected international destinations, Video conferencing, Mobile apps, and Integration with popular CRM systems like Microsoft Teams & Outlook.
The VoIP Shop also offers a team of experts who are available to help you with any questions or problems you may have. They are available 24/7 by phone, email, or live chat. If you are looking for a reliable and feature-rich VoIP phone system for your business, then The VoIP Shop is a great option. They offer a wide range of features and plans to suit your needs and have a team of experts to help you.
Plan & Pricing:
Standard - £12.95 /MONTH/USER
Premium - £14.95 /MONTH/USER
Ultimate - £19.95 /MONTH/USER
Free Desk phones ( Yealink T41 or Polycom VVX300 ) available for all plans.
Ratings:
The VoIP Shop has a rating of 5 out of 5 stars on Google, based on over 120 reviews.
Reviews from customers:
I'd highly recommend The VoIP Shop to any business, big or small. We ended a 7-year relationship with a leading international phone provider due to poor customer service and overcharged services. Moving to the VoIP shop was by far the best decision.
Every person you speak to is polite, proactive and
helpful. The phone system itself is very feature rich and we're happy to be
saving £'s each month.
Highly recommended. - Thanks everyone.
2. BT Business (Cloud Voice) - Best for Brand Trust
Best For: Traditional businesses who prefer a household name. Starting Price: £19.99 per user/month.
Plan & Pricing:
Professional: £20 per user per month
Enterprise: £25 per user per month
Free Trial -
BT offers a 30-day free trial of its Business VoIP Service
Ratings: The average rating for BT on Trustpilot is 2.6 out of 5 stars from 13,770 reviews.
Customer Reviews:
The Trustpilot reviews are mostly negative, with users complaining about the company's customer service, billing practices, and network reliability.
3. 3CX - Best Low-Cost Option for IT Teams
Best For: Companies with an internal IT department who want total control. Starting Price: ~£15.00/month (Pricing is per system, not per user).
Plan & Pricing:
Basic Plan: £15 per user per month
Professional: £20 per user per month
The 3CX frequently changes the pricing and planning, so check the UK's best 3CX partners.
Free Trial - All plans also include a 30-day free trial.
Ratings:
3CX has an overall rating of 4.3 out of 5 stars on Trustpilot UK, based on 9 reviews.
Customer's Reviews:
The most common positive reviews mention the software's ease of use, features, and value for money. The most common negative reviews mention the software's lack of customization and customer support.
4. RingCentral - Best for Enterprise Features
Best For: Large corporates needing deep CRM integration. Starting Price: ~£19.99 per user/month.
Plan & Pricing:
Standard: £23.95 per user per month
Premium: £33.95 per user per month
Ultimate: £43.95 per user per month
Free Trial - All plans also include a 30-day free trial.
Ratings: RingCentral has a 3.9/5 rating on Trustpilot, based on 560 reviews.
Customer's Reviews:
The Trustpilot reviews are mostly positive, with users praising the company's customer service, features, and ease of use. However, there are some negative reviews, with users complaining about the price and occasional technical issues.
5. Vonage Business - Best for Reliability & Uptime
Best For: Growing startups that cannot afford downtime. Starting Price: ~£12.50 per user/month.
Plan & Pricing:
Basic: £12.50 per user per month
Standard: £25 per user per month
Premium: £35 per user per month
Free Trial - Vonage offers a 30-day free trial for all plans.
Ratings:
Vonage Business has a rating of 4.2 out of 5 stars on Trustpilot, based on 2,343 reviews.
Customer's Reviews:
The majority of Trustpilot reviews are positive, with users praising the company's customer service, features, and ease of use. However, there are some negative reviews, with users complaining about the price and occasional technical issues.
6. 8X8 - Best for International Calling
Best For: Call centres and businesses with global clients. Starting Price: ~£19.00 per user/month.
Plan & Pricing:
Basic: £19 per user per month
Standard: £36 per user per month
Premium: £85 per user per month
Free Trial - 8X8 is offering a free trial, but not for all plans.
Ratings:
8X8 has a rating of 4.3 out of 5 stars on Trustpilot, based on 3,300 reviews.
Customer's Reviews:
The majority of Trustpilot reviews are positive, with users praising the company's reliability, customer service, and value for money. However, there are some negative reviews, with some users complaining about the company's pricing structure and technical support.
7. 4Com Technologies - Best for Premium Hardware
Best For: Businesses that want flashy "HiHi" tablet phones. Starting Price: POA (Price on Application) / Lease-based.
Plan & Pricing:
Basic: £20 per user per month
Standard: £40 per user per month
Free Trial - 4Com free trail depends on providers and some one offering free trial but not for all plans.
Ratings:
4com has a rating of 4.8 out of 5 stars on Trustpilot, based on 1995 reviews.
Customer's Reviews:
The majority of Trustpilot reviews are positive, with customers praising the company's customer service, products, and overall value. However, there are some negative reviews, with some users have complained about the company's pricing, while others have had issues with their service.
8. Gamma Horizon - Best for Microsoft Teams Integration
Best For: Businesses already using Microsoft 365. Starting Price: ~£15.00 - £20.00 per user/month.
Plan & Pricing:
Basic Plan - £20 per month for 2 lines
Advanced Plan - £30 per month for 4 lines
Premium Plan - £40 per month for 6 lines
Free Trial - Gamma Horizon offers a free trial of its VoIP business service.
Ratings:
Gamma Horizon has an overall rating of 4.3 out of 5 stars on Trustpilot, based on 167 reviews
Customer's Reviews:
The company has been praised for its customer service, reliability, and value for money. However, some customers have complained about technical issues and long wait times for support.
9. Virgin Media Cloud Voice - Best for Broadband Bundles
Best For: Current Virgin Media fibre customers. Starting Price: ~£10.00 per user/month (often bundled).
Plan & Pricing:
Basic VoIP Business Plan: This plan starts at £25 per month for 10 lines
Advanced VoIP Business Plan: This plan starts at £35 per month for 20 lines
Premium VoIP Business Plan: This plan starts at £45 per month for 30 lines
Free Trial - The free trial is for 14 days. You can sign up for the free trial on Virgin Media Business's website
Ratings - Virgin Media Business VoIP has an overall rating of 4.3 out of 5 stars on Trustpilot, based on 763 reviews
Customer's Reviews:
The customer's positive points are customer service, reliability, and value for money. However, some customers have complained that the issue-solving take over time.
10. SureVoIP - Best for Developers
Best For: Tech-savvy users and developers. Starting Price: From £11.00 per user/month (Managed).
Plan & Pricing:
Basic Plan: £11 per month per user
Standard Plan: £15 per month per user
Additional users are £5.50 per month
Free Trial - SureVoIP offers a free 14-day trial of its business VoIP service
Ratings:
SureVoIP has received a Trustpilot rating of 2.2 out of 5 stars, based on 14 reviews.
Customer's Reviews:
The Trustpilot majority of reviews are negative, with customers complaining about poor customer service, technical issues, and high prices.
Buying Guide: How to Choose a Business VoIP Provider in UK 2025
Choosing the right business VoIP provider isn't just about finding the cheapest monthly rate. With the 2027 PSTN Switch-off fast approaching, you are building the communication infrastructure for the next decade of your business.
Here are the four critical factors you must evaluate before signing a contract.
1. The "Hidden" Costs of VoIP
When comparing VoIP service providers, the advertised "per user" price is rarely the final figure. Be sure to ask these questions:
- Hardware Fees: Do I have to buy the phones (£80-£150 each) upfront, or are they included in the monthly rental?
- Setup & Training: Is there a charge to configure the call flows and train my staff?
- Number Porting: Will the provider charge to move my existing 01, 02, or 0800 numbers over? (Note: At The VoIP Shop, we often assist with porting for free).
2. Essential Features vs. "Nice-to-Haves"
Don't overpay for features you won't use. Match the plan to your team's needs:
- Small Office (1-10 users): You need an Auto-Attendant (IVR) to direct calls ("Press 1 for Sales"), Voicemail-to-Email, and a reliable Mobile App.
- Sales Team: You need CRM Integration (HubSpot/Salesforce) to log calls automatically and Call Recording for training.
- Remote/Hybrid Workers: You need a robust Softphone that works on laptops without a VPN.
3. Network Readiness (The "Jitter" Test)
VoIP runs entirely on your internet connection. If your broadband is slow, your voice quality will sound robotic (known as "jitter").
- Rule of Thumb: You need roughly 100kbps (upload and download) per concurrent call.
- Recommendation: If you have more than 10 users, we strongly recommend upgrading to a dedicated [Business Leased Line] or ensuring you have FTTP (Fibre to the Premises) to guarantee crystal-clear audio.
4. UK-Based Support vs. Global Call Centers
This is the most overlooked factor. When your phones go down on a Tuesday morning, do you want to speak to a technician in the UK, or wait for a ticket response from a support center in a different time zone?
- Pro Tip: Check the provider’s Trustpilot reviews specifically for "Support Response Time."
Final Verdict: Which Business VoIP Provider is Right for You?
The "best" provider depends entirely on your business model:
- Choose RingCentral or 8x8 if you are a large multinational enterprise needing complex global integrations and don't mind higher fees.
- Choose 3CX if you are a tech-savvy company with an IT team that wants to manage its own private server.
- Choose The VoIP Shop if you are a UK SME that wants a cost-effective, "done-for-you" solution with free hardware, UK-based support, and a system that is ready to use on day one.
Ready to future-proof your business communications? 👉 [Get a Free Custom Quote Today] or call our UK team on 0116 350 0215 to discuss your needs.
Unlock the Wholesale SIP Trunk Providers in UK! Discover our Telecom experts' top picks now and revolutionize your business communication. Please read our latest blog for all the details!
FAQ
This article was authored by:
This guide is written and maintained by the editorial team at The VoIP Shop, a specialist business telephony provider in the UK.
While we have listed our own services as a top choice for SMEs, we believe in fair and open competition. All providers in this review—including RingCentral, Gamma, and Vonage—were evaluated based on their actual features, pricing, and support quality for 2025. We do not accept payment from competitors to alter these rankings.
