Office Telephone Systems: The UItimate Guide Quick answer
Office telephone systems in the UK now typically cost £10-£25 per user/month, with most businesses choosing VoIP or cloud-based systems for lower costs, flexibility, and remote working.
👉 Most UK businesses save 20-40% by switching providers or comparing quotes
✔ No upfront hardware required
✔ Works for office, remote, and mobile teams
✔ Advanced features included (call routing, analytics, integrations)
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Contents
Types of Office Telephone Systems
Office Telephone Systems Providers
Features to Look for in an Office Telephone System
How to Choose the Right Office Telephone System for Your Business
How do we work?
Transparent, impartial, and data‑driven reviews made by a team of expert humans, never AI generated – here’s exactly how Compare Your Business Costs helps you find the best deals from trusted UK providers: click here
Authored by: Ally Cox (Business Technology & B2B Services Specialist 10+ Years’ Experience)
Reviewed by: James Ward (Telecoms Specialist, 12+ Years Experience)
Last Updated: May 2026
Key Takeaways
Office phone systems start from £10 per user/month
VoIP and cloud systems are now the default choice in 2026
Businesses switching providers often save 20-40%
Remote and hybrid working has made cloud systems essential
Most SMEs don’t need expensive on-premise PBX systems
Comparing providers is the fastest way to reduce costs
Office Telephone System Costs (UK 2026)
System Type Typical Cost Best For
Cloud/Hosted VoIP
£10-£25/user/month
Most UK businesses
VoIP (advanced)
£12-30/user/month
Growing teams
On-premise PBX
£1,000-£5,000+ upfront
Large enterprises
Hybrid systems
£15-£40+/user/month
Complex setups
Reality
Most SMEs choose cloud systems because they avoid large upfront costs and scale easily.
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Who Are Office Telephone Systems Best For? Office phone systems are perfect for:
SMEs needing reliable, low-cost communication
Sales and customer service teams
Remote or hybrid teams
Multi-site businesses
Businesses handling high call volumes
👉 Even small teams (2-5 users) benefit from switching to VoIP
Types of Office Telephone Systems
Feature Traditional PBX VoIP Cloud-Based Hybrid
Hardware
On-site
None
None
Partial
Cost
High upfront
Low monthly
Low monthly
Mixed
Flexibility
Low
High
Very high
Medium
Remote working
Poor
Excellent
Excellent
Good
Best for
Enterprises
SMEs
Most businesses
We think the best option for 90% of UK businesses: Cloud/Hosted VoIP
Office Telephone Systems Providers
Features to Look for in an Office Telephone System When choosing a telephone system for your business, it’s important to consider the features that will support your communication nee, and while these will vary from business to business, here are some of the main ones to look for:
Call forwarding and routing Voicemail to email: Automated attendants Conference calling Mobile integration Call analytics
How to Choose the Right Office Telephone System for Your Business The right office telephone system depends on your business’s size, budget, and communication needs, so we suggest you ask yourself the following questions when deciding what is right for your business:
What is your business size and growth plans?
For small businesses, a cloud-based or VoIP system offers scalability without high upfront costs. Larger businesses or those with plans for rapid growth may benefit from a hybrid or on-premise PBX system that can handle a high volume of calls.
Consider both the initial setup costs and ongoing expenses when factoring in your budget.
Do you need to factor in remote working?
if your business has a significant number of remote workers, or if you’re moving towards a hybrid working model, a cloud-based or VoIP system offers flexibility and mobile integration that ensures your team stays connected wherever they are.
What’s your current and predicted call volume?
Businesses with high call volumes, such as customer service centres, may require systems with advanced call routing, call recording, and analytics features.
What security levels do you need?
VoIP systems should always include encryption and secure login options to prevent unauthorised access.
Common Mistakes to Avoid Overpaying for features you won’t use
Not comparing providers
Choosing long contracts without flexibility
Ignoring call quality and support
👉 Most businesses overpay simply by not comparing quotes
Is an Office Telephone System Worth It? Yes! especially if you:
Handle regular customer calls
Have multiple employees or locations
Want to improve efficiency and response time
Here are the main benefits:
10-30% productivity boost
Lower call costs
Better customer experience
Compare Office Telephone Systems Now
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FAQs
What is an office telephone system?
A system that allows businesses to manage calls, route enquiries, and communicate internally and externally.
How much do office phone systems cost in the UK?
Typically £10-£25 per user/month for cloud systems.
Are traditional phone systems being phased out?
Yes. The UK PSTN/ISDN switch-off means businesses are moving to VoIP.
What is the best system for small businesses?
Cloud-based VoIP systems are the most cost-effective and scalable.
Can I use Microsoft Teams as a phone system?
Yes, with Microsoft Teams Phone integration.
Do I need hardware?
Not always, many systems work via apps on mobiles and laptops.
How do I get the best deal?
Compare multiple providers to find the best price and features.
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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.
