Are you still relying on traditional phone lines to run your business communications? If so, you might be missing out on a more efficient, scalable, and cost-effective solution.

A VoIP phone system for small business can transform how your team connects with customers and collaborates internally,  especially in today’s flexible, remote-first work culture.

VoIP (Voice over Internet Protocol) systems enable you to make calls over the internet, eliminating the need for expensive landlines or on-premise hardware. From call routing and analytics to integrations with tools like Microsoft 365 and Zoom, VoIP solutions offer small businesses professional-grade communication without the hefty costs.

In this guide, we’ll break down the top 10 VoIP providers for UK small businesses, including pricing, key features, and what makes each one stand out. Let’s help you find the right fit for your business.

Why Choose a VoIP Phone System for Your Small Business?

Switching from traditional landlines to a VoIP phone system for small business offers many benefits, particularly in terms of cost savings, flexibility, and performance. Unlike landlines, VoIP systems use your internet connection to handle voice calls, which reduces line rental and maintenance costs.

VoIP is also more flexible. You can make and receive calls from anywhere using a laptop, mobile phone, or desk phone, which is ideal for remote teams and hybrid workplaces.

Additionally, VoIP systems enhance customer service. Features like call forwarding, voicemail-to-email, and auto attendants ensure you never miss important calls.

Internal communication also improves, with many platforms including team messaging, video conferencing, and shared contact lists.

Ultimately, VoIP helps small businesses appear more professional, streamline operations, and deliver better customer experiences, all while cutting communication costs.

What to Look for in the Best VoIP Phone System in the UK?

When evaluating the best VoIP phone system for small business in the UK, it’s important to assess both functionality and value. First, consider the pricing structure. Some providers offer low entry-level plans, while others may include more features at a higher cost, find the right balance for your needs.

Scalability matters, too. Choose a system that can grow with your business by allowing you to add users, numbers, or locations without hassle.

Look for modern, cloud-based platforms. These eliminate the need for on-premise hardware and allow remote access from anywhere.

Integration is also key. The best systems work seamlessly with tools like Microsoft 365, Google Workspace, and CRM platforms.

Finally, consider international capabilities. If you serve clients abroad, ensure your provider supports global numbers and calling.

A strong VoIP system blends affordability with the flexibility modern UK businesses demand.

How to Choose the Right VoIP Provider for Your Business?

Selecting the best VoIP phone system for your small business involves more than just comparing prices, it’s about finding a solution that aligns with your goals, workflows, and future growth plans.

Use the checklist below to make an informed decision:

• Assess your business size and call volume
• Decide whether you need desk phones, mobile access, or both
• Look for call features like voicemail, auto attendants, and analytics
• Check integration options with your CRM, calendar, and helpdesk tools
• Determine your budget and preferred billing frequency (monthly or annually)
• Review support availability and service level agreements (SLAs)

Budgeting is a key part of this process. Don’t just choose the cheapest plan, make sure it includes the features you need, such as unlimited calls, video meetings, or international dialling.

Scalability should also be top of mind. A good VoIP provider should allow you to add or remove users as your team grows or changes. Cloud-based systems offer the most flexibility, especially if you have remote workers.

Lastly, check what support is available. Look for 24/7 customer service, onboarding assistance, and a user-friendly admin dashboard. The right provider should be a partner in your business communications, not just a service.

Best 10 VoIP Phone System for Small Business

1. Dialpad

If you’re looking for a forward-thinking VoIP phone system for small business, Dialpad brings together AI, scalability, and reliability into one cloud-based platform.

Its sleek interface and enterprise-grade infrastructure make it suitable for startups and SMEs that want to modernise customer communications and improve internal collaboration. From customer service to sales and remote team meetings, Dialpad adapts to your workflows with ease.

It stands out by using real-time artificial intelligence to assist in conversations, automate call summaries, and route calls intelligently. This is particularly valuable for small businesses looking to optimise support and reduce operational load without hiring more agents.

Key features of Dialpad include:

• Unlimited calling, SMS, and MMS on all plans
• AI meetings with transcription and summaries
• Custom call routing and auto-attendant tools
• Web and chat-based support included
• Local number support in over 70 countries
• Integrations with Google Workspace, Microsoft 365, Zendesk, and more
• Enterprise-grade security (HIPAA compliant, SOC 2 certified)

Pricing (per user/month):

• Standard: £12
• Pro: £20
• Enterprise: Custom pricing (via sales contact)

Dialpad’s focus on automation, voice clarity, and smart features positions it as a powerful VoIP solution for UK-based businesses that want to scale without sacrificing quality. With flexible pricing and strong international features, it works just as well for local teams as for global operations.

2. RingCentral

RingCentral is a cloud-based business communication system designed for flexibility and scale, ideal for small businesses needing seamless call handling, messaging, and video conferencing across multiple devices. It’s trusted by over 500,000 businesses globally and delivers reliability, security, and ease of use for distributed teams.

Its RingEX platform unifies all communication channels into one app, enabling businesses to manage voice calls, faxes, video meetings, and team messaging through a central dashboard.

Whether you’re onboarding new staff or scaling your customer support, RingCentral’s platform ensures consistent performance and rapid deployment.

Key features of RingCentral include:

• Unlimited voice calls, SMS, and instant messaging
• AI assistant for call summaries and transcription
• Cloud PBX system with no on-premise hardware required
• 24/7 customer support via phone and chat
• Over 500 integrations including Salesforce, Microsoft 365, Google Workspace
• HD video conferencing for up to 200 participants
• Number porting and remote device management

Pricing (per user/month):

• Essentials: £12.99
• Standard: £19.99
• Premium: £24.99
• Ultimate: £29.99

RingCentral provides an excellent all-in-one VoIP solution for small businesses in the UK that want robust functionality, global reach, and advanced support features. With its high uptime, integrated tools, and strong AI capabilities, it’s a solid pick for businesses prioritising reliability and expansion.

3. Vonage

Vonage is a scalable and affordable VoIP platform known for supporting both local and international communication for small businesses. It combines over 30 essential phone features into a unified system and is widely used by businesses operating across regions, especially those requiring international number support and mobility.

With its mobile and desktop apps, Vonage allows you to make and receive calls, manage team communications, and integrate with popular business tools. It also offers virtual receptionist services, ideal for companies wanting a professional call-handling system without extra staffing costs.

Key features of Vonage include:

• Local and international number support across 96+ countries
• Call forwarding, monitoring, and virtual receptionist
• Unlimited voice calls and collaboration tools
• Mobile and desktop apps with video conferencing
• Integration with Salesforce, Slack, Microsoft Teams, and more
• Option to bundle hardware for desk phones
• GDPR-compliant infrastructure for UK businesses

Pricing (per user/month):

• Express: £10
• Core: £15
• Max: £25

For UK-based small businesses that rely on global client interactions or remote collaboration, Vonage offers a comprehensive and budget-friendly VoIP solution. Its broad integration network and enterprise-grade call management make it a great choice for growing firms.

4. 8×8 Work

8×8 Work delivers a feature-rich VoIP system suitable for both general business use and more demanding environments like customer service and international sales. Its flexible plans are designed to grow with your business and include built-in tools for collaboration, call monitoring, and AI support.

What sets 8×8 apart is its global coverage, supporting unlimited calls to up to 48 countries on higher-tier plans, and a robust set of features that includes team messaging and video conferencing, all managed in a central platform.

Key features of 8×8 Work include:

• Unlimited UK and international calling (X2 & X4 plans)
• HD video conferencing with screen sharing
• Call recording, whisper, barge, and monitoring tools
• Auto-attendant, SMS/MMS support, and team chat
• Contact centre features on advanced plans (IVR, analytics)
• Available desktop/mobile apps for remote teams
• Discounts for annual prepayments and high volume

Pricing (per user/month):

• X1/Express: £12
• X2: £20
• X4: £36

8×8 Work is ideal for businesses with international communication needs or a focus on customer support. Its global reach, advanced call features, and seamless communications tools help small teams operate like a large enterprise.

5. Ooma Office

Ooma Office is a user-friendly VoIP phone system designed for small business owners who want enterprise-level call handling features without the complexity. Its platform includes call routing, voicemail, SMS, and video conferencing, with built-in analytics for tracking communication trends.

Although the interface is basic compared to competitors, Ooma’s call controls are intuitive and efficient. It’s well-suited to service businesses that rely heavily on voice communications and want clear performance visibility.

Key features of Ooma Office include:

• Unlimited calling across North America and Mexico
• Customisable call routing with queues and ring groups
• Call parking, forwarding, hold, and transfer options
• Basic video meetings with screen sharing and recording
• CRM integrations and analytics on Pro Plus plan
• Includes toll-free number and 500 minutes per month
• Strong mobile and desktop app experience

Pricing (per user/month):

• Essentials: £16.35
• Pro: £20.45
• Pro Plus: £24.55

Ooma Office is a great solution for UK-based companies serving North American clients or operating in those regions. It offers reliable performance, useful routing tools, and cost-effective plans suited for small teams needing simple, powerful communication.

6. Zoho Voice

Zoho Voice is a practical VoIP phone system that works especially well for businesses already using Zoho’s suite of tools. It offers a cost-effective option for startups and small teams who need essential telephony features and the convenience of built-in analytics and admin controls.

Its free tier is one of the few among business VoIP platforms, making it a solid entry point for sole traders or new businesses. Although it lacks video calling and AI, it’s well-optimised for voice-based communication.

Key features of Zoho Voice include:

• Free tier with 250 outgoing minutes for one user
• Customisable admin settings, analytics, and call routing
• Voicemail transcription and auto-receptionist
• Works with Zoho CRM, Zoho Meet, Telegram, WhatsApp
• End-to-end encryption and two-factor authentication
• Support for Grandstream, Poly, and Yealink desk phones
• Available on desktop and mobile platforms

Pricing (per user/month):

• Free Tier: Limited
• Paid Plans: From £8.20 (billed annually)

Zoho Voice is best suited for UK startups and freelancers who are looking for simplicity, integration with Zoho tools, and flexibility in pricing. It offers basic VoIP features at a competitive rate, making it an excellent budget-friendly choice.

7. GoTo Connect

GoTo Connect offers a high-performance VoIP platform designed for flexibility and international use. With powerful call routing tools and an intuitive interface, it’s suitable for small teams that require custom phone systems without complex coding.

GoTo Connect’s standout feature is its ability to handle unlimited international calls to 50+ countries, a major plus for UK businesses with clients or suppliers abroad. It also supports smart IVR flows and advanced analytics to optimise customer interaction.

Key features of GoTo Connect include:

• Drag-and-drop dial plan builder with no-code interface
• Unlimited international VoIP calling to 50+ countries
• Smart call routing with queues, ring groups, and auto attendants
• Call insights and customer usage analytics
• Custom audio recordings or type-to-voice for menus
• Unified platform for voice, video, and messaging
• SMS credits per user for additional communication

Pricing (per user/month):

• Plans typically range from £22–£30
• Final pricing may vary based on features and region

GoTo Connect is ideal for UK-based small businesses needing high-volume international communication and a fully customisable phone system. It delivers flexibility, intelligent routing, and global scale without the complexity of traditional systems.

8. Microsoft Teams Phone

Microsoft Teams Phone is a robust VoIP add-on for businesses already using Microsoft 365. It allows small teams to add full-scale telephony features to Teams, making it a central hub for calls, messages, meetings, and AI-powered collaboration.

While it requires a Microsoft Teams subscription, the phone system integrates deeply with the Microsoft ecosystem, making it ideal for companies that value advanced analytics, hardware compatibility, and cloud security.

Key features of Microsoft Teams Phone include:

• Seamless integration with Office 365 apps
• AI tools via Copilot for call summaries and action items
• Reliable performance across desktop, mobile, and web
• Call monitoring, queuing, and analytics reports
• Certified compatibility with Cisco, Poly, Jabra, Yealink devices
• End-to-end encryption and multifactor authentication
• Scalable plans for teams of all sizes

Pricing (per user/month):

• Teams Phone Standard:  £8.20 ($10) (requires Teams subscription)
• With Calling Plan: Starts at £14.00
• AI Add-ons: Copilot (£24), Teams Premium (£8.20)

For Microsoft-focused businesses in the UK, Teams Phone provides a secure, scalable, and intelligent VoIP system that integrates deeply with daily workflows. It’s an efficient upgrade for companies already invested in Microsoft tools.

9. Nextiva

Nextiva offers a cloud-based VoIP system built for communication, collaboration, and customer management, all in one app. It’s especially useful for SMEs that want a centralised platform to manage calling, messaging, and CRM functions.

From its intuitive admin portal to dedicated numbers for each user, Nextiva gives teams the tools to streamline their operations. The new Message Pro feature enhances team texting, and the platform supports call routing, team chat, and file sharing.

Key features of Nextiva include:

• VoIP, SMS, video conferencing, and live chat in one app
• Dedicated numbers and portal access per user
• Message Pro for advanced text routing
• Auto attendants, call queues, and voicemail tools
• Built-in contact list and calendar management
• Integrates with Salesforce, HubSpot, and Microsoft
• Desktop and mobile app alerts for messages

Pricing (per user/month):

• Core: £15
• Engage: £25
• Power Suite: £75

Nextiva is perfect for small businesses that want a single solution for communication and customer experience. While it lacks some integrations, its ease of use and internal tools make it a great fit for small teams focused on service and speed.

10. Zoom Phone

Zoom Phone extends the capabilities of Zoom Meetings by offering a powerful VoIP system that supports team chat, call queues, analytics, and HD voice across desktop and mobile platforms. It’s best suited for teams already using Zoom’s collaboration tools.

Its standout feature is the option for unlimited domestic calling outside the US, covering up to 40 countries. Teams can easily transition from chat to voice or video within a unified interface.

Key features of Zoom Phone include:

• Unlimited domestic calling in 40+ countries
• Native integration with Zoom Meetings and Whiteboards
• Intuitive desktop and mobile apps
• Call monitoring, IVR, queues, and voicemail
• Optional analytics Power Pack for real-time tracking
• Supports team chat, file sharing, and emoji reactions
• Fixed feature set across plans for consistency

Pricing (per user/month):

• Ranges from £15 to £22.49
• Add-ons available for broader calling zones

Zoom Phone is ideal for small UK businesses looking for simplicity, strong audio quality, and platform cohesion. It’s particularly effective if you’re already using Zoom, offering a natural extension of existing workflows.

Comparison  – VoIP Phone Systems for UK Small Businesses

VoIP Provider	Starting Price (per user/month)	Free Trial	Key Features	Ideal For
Dialpad	£12	Yes	AI-powered tools, HD meetings, auto-attendant, 70+ country support	Tech-savvy, AI-driven communication
RingCentral	£12.99	Yes	Unified messaging, 24/7 support, 500+ integrations	All-round business communication
Vonage	£10	Yes	96+ world numbers, CRM integration, mobile/desktop app	International businesses, flexibility
8×8 Work	£12	Yes	Global calling, contact centre features, call monitoring	Customer service and global outreach
Ooma Office	£16.35	Yes	Call routing, video meetings, toll-free numbers	North America-based communication
Zoho Voice	£8.20	Yes	Analytics, auto-attendant, Zoho CRM integration	Startups and Zoho users
GoTo Connect	£22–£30	Yes	Unlimited global calling, custom IVR builder, analytics	Remote and international teams
Microsoft Teams	£8.20	No	Copilot AI, Teams integration, strong admin controls	Existing Microsoft 365 users
Nextiva	£15	Yes	Contact management, team chat, IVR	Teams needing internal collaboration
Zoom Phone	£15	Yes	Seamless Zoom integration, HD voice, team chat	Zoom users and hybrid teams

Conclusion

Choosing the right VoIP phone system for your small business doesn’t have to be complicated. With so many feature-rich and cost-effective options available in the UK, the key is to align your choice with your business needs, whether that’s seamless team collaboration, customer support, or international calling.

Each of the top 10 providers we’ve covered offers a unique mix of tools, integrations, and pricing, so it’s worth evaluating them based on what matters most to your operations.

VoIP technology is no longer a “nice-to-have”, it’s a necessity for businesses aiming to grow, reduce communication costs, and stay competitive in a remote or hybrid world. Take your time, compare features, and choose a system that supports not just where your business is today, but where it’s heading tomorrow. The right system can make all the difference.

FAQs

What is a VoIP phone system, and how does it work?

A VoIP (Voice over Internet Protocol) system allows you to make phone calls using an internet connection rather than traditional phone lines. It converts voice into data, enabling affordable, high-quality communication through apps or devices.

Are VoIP systems reliable for small business use in the UK?

Yes. Most modern VoIP providers offer 99.999% uptime, strong security protocols, and reliable voice quality. Choosing a provider with data centres in or near the UK improves performance and call stability.

How much does a VoIP phone system cost for small businesses?

Prices typically start around £10–£15 per user per month. Advanced features, international calling, and integrations may increase the cost, but VoIP is generally more affordable than landlines.

Can I keep my current business phone number when switching to VoIP?

Most VoIP providers in the UK support number porting, allowing you to retain your existing business phone numbers without service interruption.

Is VoIP secure for handling customer communications and data?

Yes. Leading VoIP providers use encryption, two-factor authentication, and compliance measures like GDPR, HIPAA, or SOC 2 to keep your business and customer data safe.

Do I need to buy new hardware for VoIP?

No, most systems work with your existing computers, smartphones, or VoIP desk phones. Some providers offer optional hardware packages, but many setups are software-based.

Can I use VoIP with remote or hybrid teams?

Absolutely. VoIP is ideal for hybrid work setups, offering cloud access, mobile apps, and remote call routing, ensuring your team stays connected from anywhere.