SIP trunking and UK business phone numbers (+44)
Connect your teams in London (020), Manchester (0161), Birmingham (0121), Edinburgh (0131), Glasgow (0141), Bristol (0117) and Leeds (0113) with +44 geographic, 03, 0330/0345 and 0800 freephone numbers, SIP trunking, hosted PBX, cloud contact centre and SD-WAN. One AstraQom contract, Ofcom-compliant provisioning and number porting, a clean migration path off ISDN and PSTN before the switch-off, UK-hosted call routing with GDPR-compliant data handling, GBP billing and 24/7 in-hours and out-of-hours support.
Cities we serve in United Kingdom
Local presence in 570+ cities — pick yours to see area codes and services.
Available services
Every AstraQom service is available in United Kingdom with local provisioning and compliance handled for you.
Hosted PBX
A complete cloud phone system — no hardware, no headaches.
Virtual PBX
A lightweight virtual phone system — perfect for distributed teams.
SIP Trunks
Carrier-grade voice trunks for any PBX or contact center.
Local Phone Numbers
Local presence in every market — without opening an office.
Virtual Receptionist
Real humans answering your phone, 24/7, in your brand voice.
Voice & SMS Broadcast
Reach thousands in minutes — voice or SMS, on demand.
Unified Communications (UCaaS)
Voice, video, chat and meetings — one platform, one bill.
SD-WAN
Application-aware, secure connectivity across every site.
Contact Center (CCaaS)
Turn every interaction into a sales or service win.
IoT Solutions
Monitor what matters — agriculture, facilities, cold chain and more.
Legal Virtual Assistant
Bilingual legal answering for attorneys and law firms — 24/7/365.
Frequently asked questions
What is SIP trunking and how does it work in United Kingdom?+
SIP trunking replaces traditional phone lines with a secure internet connection between your PBX and the public telephone network. In United Kingdom, AstraQom delivers local +44 numbers and outbound voice over Tier-1 routes, in London, Manchester and Birmingham and nationwide.
Can I keep my existing United Kingdom phone numbers?+
Yes. We port your existing fixed, mobile and toll-free United Kingdom numbers from any licensed operator with zero downtime. Most ports complete in 2–4 weeks.
How fast can I get a +44 number?+
Most numbers activate within 1–3 business days. Toll-free and special numbers can require extra local KYC — we handle the paperwork end to end.
How reliable is the service in United Kingdom?+
We use geo-redundant SBCs, multiple upstream carriers and QoS-aware routing, backed by a 99.9% uptime SLA. 4G/5G failover and SD-WAN are available for sites that need guaranteed voice quality.
What equipment do I need?+
Most businesses need only an IP-PBX, a softphone app or a SIP-compatible handset. With a legacy PBX, we supply an enterprise SBC or ATA adapter so you can keep your existing phones.
Is the service compliant with United Kingdom telecom regulations?+
Yes. AstraQom operates under the Ofcom framework and handles KYC, numbering and emergency-calling compliance during onboarding, so you get a licensed route without the regulator paperwork.
How much does SIP trunking cost in United Kingdom?+
Trunks start from $9 per channel per month with per-second call billing. You only pay for active channels, and volume or multi-year commitments unlock significant discounts.
Other countries in the region
Ready to launch in United Kingdom?
Tell us where you operate and what you need. We'll come back with a tailored proposal within one business day.
Talk to a United Kingdom telecom expert