Best Business VoIP Providers in the UK — 2026 Comparison
Comparing the leading UK business VoIP providers on pricing, features, reliability, support, and suitability for different business types. AMVIA, RingCentral, 8x8, Vonage, and BT Cloud Voice assessed side by side.
Key Facts
UK Business VoIP Providers — Feature Comparison
Key features, pricing indicators, and contract terms for leading UK business VoIP providers. Assessed for SME suitability.
| Feature | AMVIA VoIPManaged UK SME serviceRecommended | RingCentralGlobal UCaaS platform | 8x8Cloud communications | Vonage BusinessCloud comms platform | BT Cloud VoiceBT's hosted telephony |
|---|---|---|---|---|---|
| Unlimited UK calls included | |||||
| Microsoft Teams integration (Direct Routing) | |||||
| Auto-attendant & IVR | |||||
| Call recording included | Add-on | Add-on | Add-on | ||
| Mobile softphone app | |||||
| Number porting managed | |||||
| UK-based customer support | |||||
| Dedicated account manager | enterprise only | enterprise only | enterprise only | business accounts | |
| Hardware supply & configuration | |||||
| PSTN migration support | |||||
| Bundled with managed IT service | |||||
| CRM integrations | limited | ||||
| Typical starting price (per user/mo) | From £12 | From £15 | From £12 | From £14 | From £16 |
Prices indicative as of March 2026. Actual pricing varies by contract term, user count, and feature tier. AMVIA pricing includes UK call bundle, call recording, and account management. Third-party pricing based on published list rates — volume discounts available from all providers.
Which VoIP Provider is Right for Your Business?
The best VoIP provider depends on your business size, existing technology stack, and support requirements.
Choose AMVIA if...
You want a managed VoIP service from a UK-based provider who handles the full setup, number porting, hardware, and ongoing support — and who can also manage your IT, connectivity, and cybersecurity. Best for UK SMEs wanting a single supplier and hands-on support.
Choose RingCentral or 8x8 if...
You are a larger business with global offices needing an enterprise UCaaS platform with international calling bundles, advanced analytics, and deep CRM integrations. Both are strong platforms but less focused on the SME managed service model.
Choose BT Cloud Voice if...
You have an existing BT relationship and prefer to consolidate telephony with your connectivity provider. BT Cloud Voice is a capable hosted telephony product, though Teams integration and account management responsiveness may be more limited compared to specialist providers.
VoIP vs Traditional Phone Systems — Cost Comparison
A traditional on-premises PBX system for a 20-user business typically requires £5,000–£15,000 in hardware and installation, plus annual maintenance costs and ISDN line rental. A managed VoIP service costs £12–£20 per user per month — for a 20-user business, that is £2,880–£4,800 per year, inclusive of calls, maintenance, and support. The ROI case for VoIP is strong for almost all SMEs, even before factoring in the operational benefits of flexible, cloud-based telephony.
Read our full VoIP guideThe AMVIA Recommendation
The AMVIA Recommendation
For UK SMEs wanting UK-based support, Microsoft Teams integration, and a single provider for connectivity and telephony, AMVIA VoIP is our recommendation. Larger businesses needing global PSTN replacement should consider RingCentral. If you are Microsoft-centric, Teams Phone via AMVIA's Direct Routing service offers the smoothest experience.
Get a Free VoIP Quote from AMVIAFrequently Asked Questions
Focus on UK-based support availability, Microsoft Teams integration via Direct Routing, whether call recording is included or charged as an add-on, and contract flexibility. Many global providers like RingCentral and 8x8 route support through overseas centres. With the UK PSTN switch-off scheduled for completion by January 2027 (Openreach), choosing a provider with strong migration support is also critical.
AMVIA VoIP starts from approximately £12 per user per month with call recording included, compared to RingCentral from £15 and BT Cloud Voice from £16. RingCentral and 8x8 often charge extra for call recording and dedicated account management. For SMEs under 100 users wanting bundled features and UK-based support, AMVIA typically offers the lower total cost.
Yes, through Teams Direct Routing or Microsoft Calling Plans. Teams Phone has surpassed 26 million PSTN users worldwide (UC Today). Direct Routing via a provider like AMVIA often costs less per minute than Microsoft's own calling plans and offers greater flexibility with number management and call routing for UK businesses.
All major UK VoIP providers support number porting, but the quality of the migration process varies significantly. AMVIA manages the full porting process with a dedicated account manager, whereas self-service platforms may leave you to coordinate directly with carriers. Porting typically takes four to seven working days once authorised by your current provider.
Get a VoIP Quote from AMVIA
Tell us about your team and current phone setup — AMVIA will provide a fixed monthly price for a complete managed VoIP service, including migration, hardware, and ongoing UK-based support.
Related Resources
Microsoft Teams Direct Routing
Teams calling with PSTN connectivity
VoIP vs Traditional Landline
Compare VoIP and traditional telephony
PSTN Switch-Off Guide
What the switch-off means for your business
Business VoIP Guide
Complete guide to business VoIP in the UK