How Much Does Business VoIP Cost in the UK in 2025?
A clear, direct answer to this question — written for UK business owners and IT decision-makers.
Direct Answer
Hosted VoIP systems typically cost £5–£15 per user per month with inclusive UK calls — a saving of up to 70% versus traditional ISDN line rental at £25–£50 per channel. Setup costs vary depending on number porting, handset requirements, and call routing complexity. AMVIA provides fixed monthly pricing with no hidden charges.
Key Points
What you need to know.
The Short Answer
31% of UK businesses have switched to VoIP as of 2025 — the fastest adoption rate of any business communication technology in recent history.
For UK Businesses
The PSTN will be switched off by 31 January 2027. Over two-thirds of UK landlines have already been upgraded to VoIP.
Cost Considerations
VoIP systems can reduce communication costs by up to 75%. Small businesses typically see 25–50% lower costs than traditional telephony.
Next Steps
About 1 in 5 business leaders say they have lost business due to poor communication.
Quick Comparison
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Frequently Asked Questions
VoIP transmits voice calls over your internet connection instead of traditional phone lines. It requires stable broadband or a leased line. Businesses typically save 40-60% on call costs compared to traditional telephony. Over 4.9 million UK businesses now use VoIP.
Yes. UK businesses can port their existing geographic and non-geographic numbers to their new VoIP provider. Number porting requires a minimum lead time of 4-7 working days. Under the PSTN switch-off, phone numbers are not lost — they transfer through the porting process.
Direct Routing connects your Microsoft Teams environment to the PSTN via a certified Session Border Controller, enabling external calls from Teams. It provides more flexibility and often lower per-minute costs than Microsoft Calling Plans. It is ideal for businesses already using Microsoft 365.
Yes, when paired with adequate connectivity. Modern VoIP systems on leased lines or FTTP deliver HD voice quality with latency under 9ms. 97% of UK workers say communication impacts their daily task efficiency. VoIP outperforms traditional telephony on features, cost, and flexibility.
Cloud-hosted VoIP typically costs £8-£25 per user per month depending on features. This includes calls, voicemail, mobile apps, and call recording. Most businesses save 40-60% compared to traditional PSTN costs. Microsoft Teams calling plans offer another option within the M365 ecosystem.
Need More Detail?
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