Network & carriers
The UK's numbering plan is regulated by Ofcom, with London using a single 020 area code shared across the entire city rather than separate codes per borough.
+44 · GB · UTC+0
United Kingdom
Country Code & Virtual Numbers
The UK's +44 code covers a numbering system that's stayed remarkably consistent since Ofcom took over telecoms regulation in 2003. Capital: London · Business hours: 4:00 AM–12:00 PM EST.
// The Basics
What is the +44 country code?
United Kingdom's international dialing code is assigned by the ITU (International Telecommunication Union) and used for every call placed from outside the country.
Numbering format
UK numbers drop the leading 0 when dialing from abroad — a London number written domestically as 020 7946 0958 becomes +44 20 7946 0958 internationally.
Calling culture
British business culture favors scheduled calls over cold-calling — sending a calendar invite or a short email ahead of time is standard practice.
Did you know
The UK's iconic red phone box (the K2 design) was created by architect Sir Giles Gilbert Scott in 1924, and remains a protected design icon even as most have been decommissioned.
// Quick Facts
A quick read on United Kingdom numbers.
UK numbers use Ofcom-assigned area codes of varying length, with London's single 020 code covering more subscribers than any other city code in the country. Rozper stores and dials contacts in full E.164 format automatically, so you never have to think about the formatting.
Want to call United Kingdom from abroad? Dial your local exit code, then 44, then the local number.
Best time to call United Kingdom from the US
United Kingdom is on UTC+0 · Business hours = – EST · Mon–Fri
// Why a Virtual Number
Why get a United Kingdom virtual number?
A +44 virtual number gives your business instant local presence in United Kingdom — without the overhead.
Local caller ID in United Kingdom
When you call from your virtual United Kingdom number, contacts see a local +44 number — dramatically improving answer rates.
No office needed
Establish a local presence in United Kingdom without renting space, hiring locally, or installing any hardware.
Instant credibility
UK consumers and businesses are notably wary of unfamiliar international numbers — a local 020 or regional code signals you're a known quantity.
Routes to any device
Calls to your United Kingdom number ring your team on mobile, desktop, or desk phone — wherever they work.
// Platform Features
Everything to call United Kingdom
The tools to reach United Kingdom contacts reliably and scale your international presence globally.
150+ country coverage
Get virtual numbers in over 150 countries on the same platform — one dashboard, one bill.
HD voice quality
Crystal-clear calls over our optimised global carrier network. No degraded quality from international routing.
Call recording
Every call recorded and transcribed automatically. Review, share, and reference conversations easily.
Voicemail to text
Voicemails transcribed and delivered by email or SMS. Never miss a message across time zones.
CRM auto-logging
All calls to and from your international number auto-logged in Salesforce, HubSpot, or Zoho.
International analytics
Call volume, answer rates, and duration broken down by country, region, and time of day.
Local Caller ID
Show a local country number as your caller ID when dialling internationally. Improves pickup rates significantly.
Instant provisioning
Activate a new country number in under 60 seconds. No contracts, no hardware, no waiting.
99.99% uptime SLA
Enterprise-grade reliability for your international calling infrastructure, 24/7.
// Get Started
Get a United Kingdom number today
Active in under ten minutes. No contracts required.
- 01
Sign up
Create your Rozper account in under 2 minutes. No credit card required to start your free trial.
- 02
Get your number
Browse available numbers in your target country and activate instantly.
- 03
Configure routing
Route calls to any device. Set business hours, voicemail, and IVR from your dashboard.
- 04
Start calling globally
Make and receive international calls immediately. Active in under 10 minutes.
// Complete List
All world dial codes by country.
Every country and territory, every international dial code. Click a country to browse it.
List of World Countries and Their Dial Codes
CountryDial CodeRegionLocal Time
Showing all 237 countries & territories* Local time updates every minute
Frequently Asked
United Kingdom questions answered.
Answers about Ofcom's numbering rules, London's shared 020 code, and getting a local UK virtual number.
The international dialing code for United Kingdom is +44. When calling from the US, dial 011 + 44 + the local number. Rozper handles this automatically.
A United Kingdom virtual number goes live in under 10 minutes. Ask us how.
Start calling United Kingdom, not tomorrow.
Get a virtual United Kingdom number or make direct international calls to +44 — active in under ten minutes.