Hosted VoIP UK Businesses Trust for a Reliable Cloud Phone System

A fully managed cloud phone system that scales with your team, cuts call costs and keeps working wherever your people are.

Scales in Minutes

Add or remove users instantly as your team changes size, without waiting on hardware or an engineer visit.

Lower Call Costs

A cloud phone system typically costs less to run than a traditional line rental and call charges combined.

Works Anywhere

Calls follow your team on desktop and mobile apps, so remote and hybrid working never means missed calls.

Hosted VoIP UK businesses can rely on for day-to-day calling

A hosted voip uk deployment moves your phone system off ageing on-premise hardware and into the cloud, where a cloud phone system can be managed, monitored and scaled without an engineer visiting your office every time something changes. Instead of a physical PBX box in a comms cupboard, your call handling, voicemail, call routing and reporting all live in a managed platform that we look after on your behalf, while your team makes and receives calls through desktop apps, mobile apps or standard desk handsets, whichever suits how they actually work. Hosted VoIP sits alongside our wider connectivity, Microsoft Teams calling and SIP trunking services, so your phone system fits into a joined-up approach to how your business communicates rather than existing as an isolated piece of kit.

The businesses that benefit most from moving to hosted VoIP are usually dealing with one of two things: an ageing on-premise phone system that's becoming expensive or risky to maintain, or a growing, increasingly hybrid team that a fixed, deskbound phone system simply can't keep up with. A cloud phone system solves both problems at once — it removes the maintenance burden of physical hardware, and it means a phone number and extension follow a person rather than a desk, wherever they're actually working that day.

It's worth setting expectations honestly. Hosted VoIP depends on a decent internet connection — call quality is only as good as the network it runs over, so businesses on unreliable or heavily contended broadband sometimes need a connectivity upgrade alongside the phone system switch, not instead of it. It also isn't automatically cheaper in every scenario; very low call volume businesses on an old, already-paid-off phone system may see a smaller saving than a business making hundreds of calls a day. We'll tell you honestly during the assessment stage what the real cost comparison looks like for your specific usage, rather than assuming hosted VoIP is the right answer for every business by default.

Understanding Hosted VoIP

Hosted VoIP means your phone system's core infrastructure — call routing, voicemail, auto-attendants, reporting — is hosted in the cloud by your provider rather than running on hardware in your own building. Calls travel over your internet connection instead of a traditional analogue or ISDN line, using the same underlying technology as video calls and online meetings, but engineered specifically for reliable voice quality.

Cloud Phone System vs Traditional PBX

A traditional PBX is a physical box that needs maintaining, patching and eventually replacing, with capacity fixed by the hardware you bought. A cloud phone system removes the hardware entirely, with capacity, features and users adjusted through software rather than a site visit.

Reliability & Failover

Because hosted VoIP runs in the cloud, redundancy is built in as standard — if one route or data centre has an issue, calls can fail over automatically, which is considerably harder to achieve with a single on-premise box.

Integration With How You Already Work

Hosted VoIP integrates with tools like Microsoft Teams, so calls, chat and video sit in one place rather than several disconnected apps, and call data can feed into your CRM so incoming calls are recognised automatically.

SIP Trunking as an Alternative

For businesses that already have an on-premise phone system they're happy with, SIP trunking connects that existing hardware to the cloud for calling, without a full switch to hosted VoIP. We offer both routes and help you work out which genuinely fits your situation, rather than pushing a full hosted VoIP migration when a simpler SIP trunking upgrade would do the job just as well for less disruption and lower upfront cost.

Our approach to hosted VoIP

Built-In Redundancy

We design hosted VoIP deployments with automatic failover, so a single network or data centre issue doesn't take your phone lines down entirely.

Number Porting Without Disruption

We manage the porting of existing numbers over to your new cloud phone system, so customers and suppliers can keep calling the same number they already have.

Ready to move your phone system to the cloud?

How it works

From assessment to go-live, moving to hosted VoIP is designed to be straightforward.

1

Assess

We review your current phone system, call volumes and internet connection to confirm hosted VoIP is the right fit.

2

Design

We design call routing, auto-attendants and user setup around how your team actually handles calls today.

3

Port & Deploy

Existing numbers are ported without disruption, and apps and handsets are configured ready for go-live.

4

Support

We monitor call quality and provide ongoing support as your team and calling needs change.

Businesses move to hosted VoIP when

Their existing on-premise PBX is ageing and getting expensive or risky to maintain
A growing, increasingly hybrid team means calls need to follow people, not desks
Call charges and line rental on a traditional phone system are higher than they'd like
Adding or removing users on their current system takes days rather than minutes
They're already using Microsoft Teams and want calling integrated into the same platform
They're opening a new office or site and want phone system setup handled remotely
A previous outage on their traditional line highlighted a lack of built-in redundancy
They want call reporting and analytics that their existing system simply can't provide
Nobody in-house has the time or telephony expertise to manage a phone system migration themselves

Why choose Cloudswitched for hosted VoIP?

We design hosted voip uk deployments with genuine redundancy built in, so a single network or data centre issue doesn't take your phones down entirely.

Number porting is handled carefully so customers and suppliers can keep calling the number they already know, with no disruption during the switch.

Your cloud phone system integrates with Microsoft Teams and your CRM where useful, so calling sits inside how your team already works rather than as a separate app to manage.

Hosted VoIP sits alongside our wider connectivity, SIP trunking and managed IT support services, so your phone system is designed with your network and internet connection in mind, not treated as an isolated purchase.

We manage the whole migration, including porting existing numbers and configuring apps and handsets, so your team experiences minimal disruption during the switch.

Ongoing support and monitoring are included, so call quality issues are picked up and resolved quickly rather than left for someone to notice and report. And because hosted VoIP is only as reliable as the network underneath it, we'll flag honestly during scoping if your current internet connection needs attention before or alongside the phone system switch, rather than letting a poor connection undermine a system that would otherwise work well.

Hosted VoIP UK cloud phone system

What our hosted VoIP service covers

01

Cloud Phone System Setup

A fully hosted cloud phone system with call routing, voicemail and auto-attendants configured around how your team works.

02

Number Porting

Existing numbers ported to your new system without disruption, so customers keep calling the number they already have.

03

Desktop & Mobile Apps

Calls work through desktop and mobile apps as well as standard desk handsets, so your team stays reachable anywhere.

04

Microsoft Teams Integration

Calling integrated into Microsoft Teams where it makes sense, so calls, chat and video sit in one place.

05

Monitoring & Support

Ongoing monitoring of call quality and reliability, with support on hand whenever an issue needs resolving.

Hosted VoIP That Fits Your Business

Every hosted VoIP deployment is scoped around the number of users, lines and features you actually need — here's what shapes the cost.

Starter

A small team moving off a traditional line

Custom/ per user, per month
  • Cloud VoIP extensions
  • Mobile & desktop apps
  • Number porting
  • Basic call routing
Get a Quote
Most Popular

Business

Growing teams needing full call handling

Custom/ per user, per month
  • Everything in Starter
  • Auto-attendants & call queues
  • Microsoft Teams integration
  • Call reporting
Get a Quote

Advanced

Multi-site or high call volume teams

Custom/ per user, per month
  • Everything in Business
  • Multi-site call routing
  • Advanced analytics
Get a Quote

Enterprise

Complex, large-scale deployments

POA/ custom quote
  • Everything in Advanced
  • SIP trunking & failover design
  • Dedicated account manager
Contact Us

Why Cloudswitched for hosted VoIP?

We treat your phone system as critical infrastructure, not an afterthought. Here's what sets us apart.

Built-in redundancy

Automatic failover means a single network or data centre issue doesn't take your phones down entirely.

Careful number porting

We handle porting existing numbers so customers keep calling the number they already know, without disruption.

Microsoft Teams integration

Calling integrated into Teams where useful, so calls, chat and video sit in one platform.

Designed with your network in mind

Hosted VoIP is scoped alongside your connectivity and internet connection, not sold as a standalone product regardless of fit.

Managed migration

We manage the whole switch, including apps and handset configuration, so your team experiences minimal disruption.

Ongoing monitoring

Call quality is monitored continuously, so issues are caught and resolved quickly rather than left for someone to report.

Scales with your business

Add or remove users in minutes as your team changes size, without waiting on hardware or a site visit.

UK-wide, remote-first delivery

We deploy and manage hosted VoIP remotely across the UK, with on-site support arranged only when genuinely needed.

Transparent pricing

Costs are clear from the outset and scoped around your actual user count and features, with no surprise invoices.

Hosted VoIP Delivered Across the UK

We deploy hosted voip uk solutions for businesses across England, Scotland, Wales and Northern Ireland, configuring cloud phone systems remotely wherever possible and arranging on-site support only when hardware genuinely needs hands-on attention. Whether your team is entirely office-based, fully remote, or spread across several sites, the same reliable, redundant cloud phone system approach applies.

Features Businesses Actually Use

Beyond basic calling, most businesses end up relying heavily on a handful of features once they're live: auto-attendants that route callers to the right department without a human answering every call, call queues so customers aren't sent straight to voicemail during busy periods, simultaneous ring and follow-me routing so a call reaches someone on their mobile if they're away from their desk, and call recording for training or dispute resolution where that's genuinely needed. Voicemail-to-email means messages never get missed simply because nobody checked a physical handset, and call reporting gives managers a clear view of volumes, wait times and missed calls that a traditional phone system was never able to provide. We configure these features around how your team actually handles calls day to day, rather than switching everything on by default and leaving you to work out what's useful.

About Hosted VoIP

Hosted VoIP has become the default choice for UK businesses replacing an ageing phone system, largely because it removes the maintenance burden of physical hardware while adding features — call reporting, mobile apps, Microsoft Teams integration — that older on-premise systems were never built to offer.

Common triggers: Businesses usually move to hosted VoIP after an on-premise PBX becomes expensive to maintain or starts showing its age, after growth or hybrid working makes a deskbound phone system impractical, or when opening a new site prompts a wider review of how the business handles calls.

Getting it right: A good hosted VoIP deployment is designed with genuine redundancy, careful number porting, and integration into the tools your team already uses, rather than a like-for-like swap of old hardware for a cloud equivalent with none of the added value.

Cost comparisons are often more favourable than businesses expect once line rental, call charges, hardware maintenance contracts and the eventual cost of replacing an ageing PBX are all added up against a simple per-user monthly price. That said, the honest answer is that the savings vary by business, which is why we scope pricing around your actual usage rather than quoting a generic number that may not reflect your situation.

Coverage

UK-Wide, Remote-First

We design, deploy and support hosted VoIP for clients across England, Scotland, Wales and Northern Ireland from our City of London base.

Standards We Work To
GDPROfcom General ConditionsCyber Essentials
Service

Hosted VoIP UK

hosted voip uk

Fully managed hosted VoIP for UK businesses, with number porting, redundancy and monitoring included as standard.

Product

Cloud Phone System

cloud phone system

A cloud phone system that replaces on-premise PBX hardware, with desktop and mobile apps and Microsoft Teams integration.

Frequently Asked Questions

Got questions about hosted VoIP? We've answered the most common ones below.

What is hosted VoIP exactly?

Hosted VoIP means your phone system's call routing, voicemail and features are hosted in the cloud by your provider, with calls travelling over your internet connection instead of a traditional analogue or ISDN line.

How much does hosted VoIP cost?

Pricing is per user, per month, and depends on the features and call handling you need. We scope every deployment individually and provide a clear quote.

Can we keep our existing phone number?

Yes, we manage number porting so your existing numbers move across without disruption, and customers keep calling the number they already know.

What happens if our internet connection goes down?

We design hosted VoIP deployments with redundancy and failover in mind, and for businesses that need extra assurance we can pair VoIP with failover internet connectivity.

Does hosted VoIP work with Microsoft Teams?

Yes, we integrate calling into Microsoft Teams where it makes sense, so calls, chat and video all sit inside the same platform.

How long does migrating to hosted VoIP take?

Straightforward migrations for a single office are usually completed within a few weeks, including number porting; multi-site deployments take longer, scoped clearly upfront.

Can our team work remotely with a cloud phone system?

Yes, desktop and mobile apps mean calls follow your team wherever they're working, without needing a desk phone at all.

Do you support hosted VoIP after go-live?

Yes, ongoing monitoring and support are included, so call quality issues are caught and resolved quickly rather than left for you to report.

Technology Stack

Powered by industry-leading technologies including SolarWinds, Cloudflare, BitDefender, AWS, Microsoft Azure, and Cisco Meraki to deliver secure, scalable, and reliable IT solutions.

SolarWinds
Cloudflare
BitDefender
AWS
Hono
Opus
Office 365
Microsoft
Cisco Meraki
Microsoft Azure

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