United Kingdom country code, +44 explained.
Everything you need to call United Kingdom with Twiching — full dialing format, step-by-step guide, and Tier-1 CLI routes that land every call.
United Kingdom
London · Europe
· COUNTRY INFO · VERIFIED
- ISO Alpha-2
- GB
- Capital
- London
- Region
- Europe
- Timezone
- UTC+0 / UTC+1
· DIALING GUIDE · VERIFIED
FULL DIAL FORMAT
011 · +44 · XX · XXXXXXXX
How United Kingdom numbers break down
A complete number to United Kingdom follows this pattern. Twiching adds the exit and country codes automatically when you dial from the app.
EXIT CODE
Dial from the US/Canada to leave the country.
COUNTRY CODE
Routes the call directly into United Kingdom.
AREA / MOBILE
Regional or mobile prefix — drop the leading 0.
LOCAL NUMBER
The subscriber's local number.
COMPLETE NUMBER FORMAT
011 · +44 · XX · XXXXXXXX
United Kingdom on the map
London · Europe
ROUTE
Tier-1 Direct
CLI
Verified
ASR
60%+ min
How to call United Kingdom
Click any step — watch the full dial string build piece by piece.
FULL NUMBER FORMAT
011 · +44 · XX · XXXXXXXX
Twiching automatically adds the exit and country codes — just enter the local number.
United Kingdom —
connected across every carrier.
191
Countries in directory
UNITED KINGDOM INCLUDED
99.97%
Call delivery rate
STIR/SHAKEN
500+
Carrier interconnects
TIER-1 DIRECT
60%+
Guaranteed ASR
REAL-TIME ROUTING
United Kingdom
Europe · GB
United Kingdom numbering plan & how to dial
United Kingdom uses an open numbering plan under country code +44. After the country code, a 2-digit area or mobile prefix is followed by a 8-digit subscriber number, giving a 10-digit national number. Domestic numbers are often written with a leading trunk "0" that is omitted when dialing United Kingdom from abroad.
United Kingdom has 96% internet penetration and is served by 4 major mobile networks (BT, Vodafone, O2, EE). VoIP is permitted and regulated by Ofcom. The local currency is GBP and the primary language is English, which shape IVR prompts, SMS content, and business-hours handling.
Most European numbering plans follow ITU-T E.164 with a national trunk prefix that is dropped for international dialing, and cross-border VoIP is widely supported across the region.
Skipping the exit code
From the US you must dial 011 before the +44 country code to reach United Kingdom.
Keeping the national trunk "0"
If a United Kingdom number is written with a leading 0 for domestic use, omit that 0 after the +44 country code when calling from abroad.
Ignoring the time difference
United Kingdom runs on UTC+0 / UTC+1. Check local hours before dialing so calls don't land outside business time.
Permitted — Ofcom regulated
Regulated by Ofcom
- CLI presentation rules enforced
- Ofcom Number Portability
- ICO data protection
US → United Kingdom
$0.006/min
per minute
United Kingdom → US
$0.006/min
per minute
More in Europe
Business calling to United Kingdom
Local GB caller ID
Present a United Kingdom +44 number so prospects in London and nationwide recognise the call and are more likely to answer.
Europe outbound & support
Run sales and support lines into United Kingdom over Tier-1 routes that interconnect with networks like BT.
Follow-the-sun coverage
Staff United Kingdom hours (UTC+0 / UTC+1) with routing that sends calls to the right team at the right local time.
FAQ
Calling United Kingdom — frequently asked questions
The country code for United Kingdom is +44. To call United Kingdom from the United States, dial 011, then 44, then the local number.
A full national United Kingdom number is 10 digits after the +44 country code — a 2-digit area or mobile prefix plus a 8-digit subscriber number.
Yes. VoIP is permitted in United Kingdom, regulated by Ofcom, so businesses can run cloud numbers and SIP termination on compliant routes.
Dial 011 (US exit code), then 44 (the United Kingdom country code), then the area or mobile prefix and subscriber number. Drop any leading domestic trunk 0.
The major networks in United Kingdom are BT, Vodafone, O2, EE. Twiching interconnects with Tier-1 carriers for direct delivery to these networks.
Twiching rates to United Kingdom start at $0.006/min per minute (and $0.006/min per minute from United Kingdom to the US), billed per second on Tier-1 routes.
Yes. Twiching provisions United Kingdom virtual numbers with local +44 caller ID for calls and, where supported, SMS — useful for sales, support, and building local market presence.
Start free
Try it for 14 days.
See what a real phone stack does.
Phone numbers, voice, SMS and AI on one account. No credit card required — no charges during the trial.
Compliance with applicable regulations required.