Business VoIP phone services across the UK

Keep your numbers, modernise calling, and move off legacy lines ahead of the 2027 PSTN switch-off. Teams Voice, SIP trunking, numbers, plans and porting.

Ofcom-registered VoIP provider • Global services • Number porting

Phone services that fit your setup

Choose what you need — Microsoft Teams Voice calling, SIP trunking, business numbers, call plans, and number porting — with a clear path to migrate away from legacy PSTN/ISDN services ahead of the 2027 switch-off.

Tell us what you’re replacing and how many users/sites you have — we’ll recommend the simplest route.

Which VoIP route should you start with?

Answer a few quick questions and we’ll point you to the best starting option.

Calling setup

Keep current numbers?

Sites

Approx. users

What matters most?

Suggested start: Microsoft Teams Voice Why: your setup leans Teams-first

Your route

Start with Microsoft Teams Voice.
Include number porting to keep continuity.

Jump to Microsoft Teams Voice

Guide only – final routing depends on your current setup and number requirements.

Phone Service Solutions

Not sure where to start? If you live in Microsoft Teams, begin with Teams Voice. If you have a phone system and need carrier-grade lines, start with SIP Trunking. If you need presence in new regions, start with Business Numbers.

Microsoft Teams Voice Calling

Turn Teams into your business phone: make and receive calls inside Teams, with a setup designed for organisations moving away from desk-phone dependency. (Also known as Microsoft Direct Routing.)

Best for: Teams-first businesses
Outcome: fewer apps, simpler calling experience
Next step: share user count + call requirements for a quote

SIP trunking (replacement for legacy lines)

Replace PSTN/ISDN lines with SIP trunks delivered over your internet connection, so your capacity can scale without physical line constraints, supporting continuity and cost efficiency compared to traditional telephony.

Best for: existing phone systems that need modern lines
Outcome: scalable concurrent calling
Next step: tell us how many channels you need

UK & International business numbers

Add geographic, non-geographic and freephone numbers – UK and international coverage, with routing options to landlines, mobiles, or your cloud phone system. Options include gold numbers and block ranges.

If you’re with another provider, we can transfer your existing numbers using number porting.

Call Plans & Tariffs

Call plans built around how you actually use the phone, from UK unlimited packages to international destinations, helping you forecast spend and avoid bill surprises.

Best for: busy teams, customer service, multi-site calling
Outcome: predictable monthly communications spend
Next step: share typical destinations/minutes

Number Porting (keep your numbers)

Move from your current provider without changing the numbers your customers already know. Our team manages the porting process to reduce disruption and protect continuity during migration.

Gain the benefits of advanced telephony services without losing your trusted phone numbers.

What happens next

The UK’s legacy PSTN network is due to switch off by January 2027. If you still rely on PSTN/ISDN (or anything built on it), now is the time to confirm what needs replacing and map a low-disruption migration path.

Quick call (15 minutes): what you have today, what’s changing, user/site count
Recommendation: Teams Voice vs SIP trunks vs numbers + call plans
Migration plan: number porting steps, cutover approach, continuity checks
Go live + support: confirm routing, call quality, and success criteria

Rated Excellent on Trustpilot