Best Business VoIP Providers UK 2026 Quick Answer
The best business VoIP provider depends on your company size, call volumes, Microsoft 365 usage, remote-working requirements, integrations and support needs.
In saying that, for most UK businesses, the main providers and platforms worth comparing include:
Provider Worth comparing for Pricing approach
bOnline
Small businesses and sole traders
Published entry-level pricing
RingCentral
Growing SMEs and unified communications
Plan or quote-based
8×8
Multi-site and analytics-focused businesses
Quote-based
BT
Businesses wanting an established UK telecom provider
Published licences with long-term contracts
Vonage
Flexible SME and hybrid-working plans
Published plans from £10/user/month
Dialpad
AI-enabled and cloud-first teams
Plans from around £12/user/month
Aircall
Sales and customer-support teams
Quote/plan-based
Gamma Horizon
UK businesses wanting a managed reseller deployment
Partner quote
Zoom Phone
Businesses already using Zoom
Plan/region dependent
Microsoft Teams Phone
Microsoft 365 organisations
£7.70/user/month for Teams Phone Standard, plus calling
Do not choose a provider on headline price alone. Compare licences, call allowances, handsets, support, contract length, annual price changes, integrations and migration costs.
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Authored by: Ally Cox (Business Technology & B2B Services Specialist 10+ Years’ Experience)
Reviewed by: James Ward (Telecoms Specialist, 12+ Years Experience)
Last Updated: October 2026
Key Takeaways
There is no single best VoIP provider for every UK business.
Small businesses should prioritise simple pricing, support and easy setup.
Growing SMEs should compare scalability, integrations and multi-site management.
Microsoft 365 businesses should compare Teams Phone alongside hosted VoIP.
Sales and support teams may need CRM integration, recording and contact-centre features.
Published per-user prices do not always include calls, setup, handsets or support.
Long contracts and annual price rises can materially increase total contract cost.
Compare at least three providers against the same business requirements.
Best Business VoIP Providers Compared
Provider Best fit Current pricing signal Main strength Watch out for
bOnline Small businesses
Low-cost published plans
Simple SME-focused packages
Less suited to complex enterprise requirements
RingCentral Growing SMEs
Plan/quote dependent
Broad unified communications feature set
Can be more platform than very small firms need
8×8 Multi-site and growing organisations
Quote required
Analytics, UC and contact-centre options
Pricing less transparent
BT Cloud Voice Businesses wanting a major UK telecom provider
From £10.52/month on a 60-month licence
Managed UK business voice
Long contract and scheduled annual increases
Vonage SMEs and hybrid teams
£10 / £15 / £25 per user/month plans
Clear plan progression and mobile/desktop apps
Advanced features sit on higher tiers
Dialpad AI-enabled teams
From around £12/user/month
Transcription, summaries and cloud communications
Best value depends on using the AI features
Aircall Sales and support teams
Plan/quote based
CRM integrations and call workflows
Less suitable for basic phone-line requirements
Gamma Horizon Managed UK deployments
Partner quote
Strong UK channel/reseller model
Price and service vary by reseller
Zoom Phone
Existing Zoom businesses
Plan/region dependent
Calling alongside Zoom collaboration
Less compelling if you do not already use Zoom
Microsoft Teams Phone Microsoft 365 organisations
£7.70/user/month for Teams Phone Standard
Native Teams integration
PSTN calling and implementation add to total cost
Prices exclude VAT where applicable and can change. Always check the current provider quote and full contract terms.
Which VoIP Provider Should You Compare First?
Your business
Providers/platforms to compare first
Sole trader or microbusiness
bOnline, Vonage, BT
Small office
bOnline, Vonage, RingCentral, BT
Growing SME
RingCentral, 8×8, Vonage, Gamma Horizon
Remote/hybrid team
RingCentral, Dialpad, Teams Phone, 8×8
Microsoft 365 organisation
Teams Phone, Gamma-managed Teams, RingCentral
Sales team
Aircall, Dialpad, RingCentral
Customer support team
8×8, Aircall, RingCentral
Multi-site business
8×8, RingCentral, Gamma Horizon
Business keeping an existing PBX
SIP providers rather than standard hosted VoIP
If you are still deciding whether you need hosted VoIP, Teams Phone or SIP rather than comparing providers, start with our business VoIP phone systems p age.
Compare Providers for Your Business
Best VoIP Provider for Small Businesses Small businesses usually need:
simple monthly pricing
a professional business number
UK call allowances
mobile and desktop apps
voicemail
call forwarding
number porting
straightforward support
bOnline, Vonage and BT are all worth comparing, as bOnline tends to suit buyers prioritising low-cost SME packages, while Vonage currently publishes UK plans at £10, £15 and £25 per user/month depending on feature level. BT can also appeal to businesses that prefer an established UK telecom provider.
For a deeper small-business comparison, see our small business phone systems guide .
Best VoIP Provider for Growing SMEs Growing businesses need to look beyond today’s user count and you will need to compare whether a provider can support:
additional users
multiple sites
call queues
CRM integrations
reporting
contact-centre features
mobile and desktop apps
international expansion
RingCentral, 8×8, Vonage and Gamma Horizon are all relevant comparison options.
The right choice depends on whether you prioritise unified communications, managed UK support, transparent pricing or future contact-centre capability.
Best VoIP Provider for Remote and Hybrid Teams Remote teams should prioritise:
reliable desktop and mobile apps
business numbers across devices
easy call transfer
central administration
presence/status tools
device flexibility
call routing across locations
RingCentral, Dialpad, 8×8 and Microsoft Teams Phone are all worth comparing depending on your existing software stack.
See our VoIP for remote teams guide for more detailed use-case advice.
Best VoIP Provider for Microsoft 365 Businesses Microsoft Teams Phone is the most obvious option to compare where Teams is already central to daily work.
Microsoft currently lists:
Teams Phone Standard: £7.70/user/month excluding VATTeams Phone with pay-as-you-go calling: £9.20/user/month excluding VATTeams Phone with UK domestic calling: £13.10/user/month excluding VAT
A separate eligible Teams licence is still required, and businesses can connect to the PSTN using Microsoft Calling Plans, Operator Connect or Direct Routing.
See our full Microsoft Teams Phone System guide .
Best VoIP Provider for Sales Teams Sales teams usually benefit from:
CRM integration
call recording
click-to-call
call analytics
automatic transcription
call summaries
outbound workflow tools
coaching features
Aircall and Dialpad are especially relevant, while RingCentral is also worth comparing for teams wanting a broader communications platform.
See our VoIP for sales teams guide for a more focused comparison.
Best VoIP Provider for Customer Support A customer-service team may need more than standard hosted VoIP and you should compare:
skills-based routing
queue callbacks
call monitoring
supervisor tools
dashboards
quality management
CRM/helpdesk integrations
contact-centre functionality
8×8, Aircall and RingCentral are all relevant options depending on how advanced the support operation is.
See our VoIP for call centres guide if this is your primary use case.
Best VoIP Provider for a Managed UK Deployment Businesses that want a telecoms partner to handle installation, configuration, handsets, support and migration should compare managed UK providers and reseller-led platforms.
Gamma Horizon is particularly relevant because it is widely sold through UK communications partners.
The important comparison is therefore not only the underlying platform but also the reseller supplying it.
Check:
support hours
response times
installation
hardware
contract terms
price increases
number porting
How Much Do Business VoIP Providers Cost?
Service type Typical cost guide
Basic hosted VoIP
£7-£15 per user/month
Standard hosted VoIP
£15-£25 per user/month
Advanced unified communications
£20-£40+ per user/month
Sales/support phone platform
£25-£60+ per user/month
Contact-centre platform
£35-£100+ per agent/month
Published provider prices do not always include:
UK call bundles
international calls
handsets
headsets
number porting
setup and migration
CRM integrations
call recording
support
annual price increases
BT Cloud Voice, for example, currently lists its Basic licence at £10.52/month on a 60-month term, Connect at £13.74 and Collaborate at £20.09, all excluding VAT, with £1 annual licence increases from April 2027 onwards.
Vonage currently publishes UK business communications plans at £10, £15 and £25 per user/month excluding VAT.
For a more detailed pricing breakdown, see our VoIP phone system costs guide .
Compare VoIP Provider Prices
How We Compare Business VoIP Providers Our provider comparisons consider the factors most likely to affect long-term value for a UK business:
pricing transparency
licence options
included calls
mobile and desktop apps
call-management features
Microsoft Teams and CRM integrations
analytics and recording
contact-centre options
scalability
UK support availability
contract flexibility
hardware options
number porting
business-size suitability
There is no universal winner. Our aim is to show which types of businesses each provider is most likely to suit.
What Should You Compare in a VoIP Provider?
Total Monthly cost
Contract length
Annual price changes
Calls
Support
Reliability and resilience
Number porting
Integrations
Hardware
Questions to Ask Before Choosing a VoIP Provider
What is the full monthly cost?
Which calls are included?
Are UK mobile calls included?
What does each licence include?
Can different employees use different licence levels?
Are desktop and mobile apps included?
How much do handsets cost?
Can we keep our existing numbers?
What number-porting charges apply?
Are there setup fees?
How long is the contract?
Will prices rise during the minimum term?
Can we reduce licences if staff leave?
What support is included?
What happens during an internet outage?
Which CRM and Microsoft integrations are available?
How is call-recording data stored?
What does it cost to leave early?
When Is It Worth Switching VoIP Provider? Consider comparing the market if:
your current contract is approaching renewal
monthly costs have increased
support is poor
remote working is difficult
the system lacks integrations
administration is cumbersome
you need better reporting
you are combining several offices
you still rely on legacy analogue services
Before switching, check:
termination fees
number portability
handset compatibility
recording exports
broadband readiness
call-flow requirements
migration timing
Compare Alternative VoIP Providers
Our Verdict: Which Business VoIP Provider Is Best? There is no single best provider for every UK business.
Small businesses: compare bOnline, Vonage and BT.Growing SMEs: compare RingCentral, 8×8, Vonage and Gamma Horizon.Microsoft 365 organisations: compare Teams Phone and managed Teams calling options.Sales teams: compare Aircall, Dialpad and RingCentral.Customer-support teams: compare 8×8, Aircall and RingCentral.Remote/hybrid teams: compare RingCentral, Dialpad, Teams Phone and 8×8.
The best choice should match your actual users, call volumes, software stack, contract requirements and support expectations.
If you are still deciding which type of phone system you need, start with our Business VoIP Phone Systems UK page.
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Frequently Asked Questions Who is the best business VoIP provider in the UK?
There is no single best provider for every business. RingCentral and 8×8 suit broader growing-business requirements, bOnline and Vonage are worth comparing for smaller firms, Teams Phone is relevant to Microsoft 365 users and Aircall or Dialpad may suit sales teams.
What is the cheapest business VoIP provider?
The cheapest provider depends on the full package. Entry-level hosted VoIP can start from around £7–£15 per user per month, but compare calls, hardware, support, setup and contract increases before choosing.
Which VoIP provider is best for small businesses?
bOnline, Vonage and BT are all worth comparing for small businesses. The best option depends on user count, call allowances, contract flexibility and the level of support required.
Which VoIP provider is best for Microsoft Teams?
Microsoft Teams Phone is the native Microsoft option. Businesses can add PSTN calling using Microsoft Calling Plans, Operator Connect or Direct Routing, or use a managed communications partner.
Which VoIP provider is best for sales teams?
Aircall and Dialpad are especially relevant because they focus heavily on CRM integrations, analytics and call workflows. RingCentral is also worth comparing for teams wanting a broader communications platform.
Is BT Cloud Voice good for business?
BT Cloud Voice may suit businesses wanting an established UK telecom provider and managed business voice. Its long licence terms and scheduled price increases should be included when comparing total contract cost.
Is RingCentral suitable for small businesses?
Yes, although it offers more functionality than some very small businesses need. It becomes more compelling where messaging, integrations, analytics and scalability are valuable.
Can I keep my existing business phone numbers?
Usually, yes. Most business VoIP providers support number porting, but you should confirm this before cancelling your current service.
Do VoIP providers include handsets?
Some packages include or finance desk phones, while others are app-only. Check whether hardware is bought, leased or financed and who owns it at the end of the contract.
How much does business VoIP cost?
Standard hosted VoIP commonly costs around £8-£30 per user per month. Advanced sales, support and contact-centre platforms can cost considerably more.
How long are VoIP contracts?
Business VoIP contracts can range from monthly agreements to 12-, 24-, 36- or even 60-month terms depending on the provider.
Can I switch VoIP provider without changing my number?
Usually, yes, provided the number can be ported. Plan the transfer carefully and do not cancel your old service before porting is complete.
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Hi, I’m Ally Cox , a senior copywriter and blogger at CompareYourBusinessCosts.co.uk, the UK’s trusted platform for comparing business services.over a decade of experience in the B2B sector, I specialise in simplifying complex topics like leased lines, VoIP, business energy, HR and payroll solutions, accounting software, and EPOS systems .HR, copywriting, and business operations- from clocking-in systems to card machines and office technology .informed, confident decisions when choosing products and services that improve efficiency and save money.
