What is a country calling code?

A country calling code is the numeric prefix you dial before a national phone number to route a call to a specific country. For example, +1 reaches the United States and Canada, +44 reaches the United Kingdom, and +91 reaches India. The plus sign stands in for the international access code your network uses.

How do I dial an international number correctly?

Start with your exit or access code (or the + symbol on a mobile), add the destination country code, then the area or city code without its leading zero, and finally the local subscriber number. So a London line looks like +44 20 7946 0000.

What does the plus (+) sign mean in a phone number?

The + is a universal placeholder for the international dialing prefix. Saving numbers in +country-code format means they connect from any country without editing the access code, which is why it is the recommended way to store contacts.

Why do the United States and Canada share the country code +1?

Both countries belong to the North American Numbering Plan, a shared system that also covers several Caribbean nations. They use the same +1 country code but are separated by distinct three-digit area codes.

Do I need to remove the leading zero from a phone number when calling internationally?

Usually yes. Many countries print a trunk prefix, often a 0, for domestic calls. When dialing from abroad you drop that leading zero after the country code. For example, a UK mobile written as 07700 900000 becomes +44 7700 900000.

What are the main area codes for UK business hubs I should recognize?

London uses 20, Birmingham uses 121, Manchester uses 161, Leeds uses 113, Edinburgh uses 131, and Bristol uses 117. Glasgow uses 141 and Liverpool uses 151. Knowing these codes helps you instantly identify where a letsdial inbound call is originating from within the UK.

Does the UK observe daylight saving time, and how does this affect scheduling calls?

Yes — the UK is on GMT (UTC+0) in winter and British Summer Time (BST, UTC+1) from late March to late October. This single-hour shift can affect scheduling for businesses coordinating between the UK and countries that don't observe DST or change on different dates. letsdial's world clock feature shows the current UK local time to help you avoid the confusion during transition weeks.

Can letsdial provide a London (020) virtual number for my business?

Yes, letsdial offers UK virtual numbers including London 020 numbers, which carry significant commercial prestige for businesses wanting a central London presence. Calls to your letsdial London number ring on your device regardless of where you're located, and the caller sees a genuine 020 number — no physical UK office required.

Are UK mobile numbers formatted differently from landlines when using letsdial?

UK mobiles start with 07 domestically (e.g., 07911 123456), which in international format becomes +44 7911 123456 — the trunk zero is dropped just like with landlines. UK mobiles are on the 07x range, which distinguishes them from landlines at a glance. letsdial routes calls to both formats correctly as long as you use the full +44 international format.

What messaging platform do UK business contacts typically use before taking a letsdial call?

WhatsApp is widely used in the UK for both personal and professional pre-call messages, though email remains strong in formal B2B contexts. LinkedIn messages are also an effective warm-up channel for UK corporate contacts. For consumer-facing businesses, a WhatsApp message sent before your letsdial call will significantly improve answer rates among UK mobile users.

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United Kingdom

+44

Country code

International prefix

The United Kingdom's country code +44 covers England, Scotland, Wales, and Northern Ireland. As one of the world's leading financial centres and a major English-speaking business hub, a UK local number is a cornerstone of any European market strategy.

Best hours:9 AM – 5 PM GMT

Language:English

Capital:London

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🇬🇧

United Kingdom

GB · Europe

+44

dial code

Capital

London

Currency

GBP (£)

Language

English

Population

68 million

Best calling window

9 AM – 5 PM GMT

12 AM

12 PM

11 PM

Greenwich Mean Time (GMT) / BST · UTC+0 to UTC+1 (BST)

Country

United Kingdom

2 Digit ISO

Country Calling Code

+44

ISO Alpha-3

GBG

Loading map…

London

Capital

Live

London

--:--:-- --

Time Zone

Greenwich Mean Time (GMT) / BST

Quick Facts

CurrencyGBP (£)

LanguageEnglish

Population68 million

GMT OffsetUTC+0 to UTC+1 (BST)

Best Hours9 AM – 5 PM GMT

Step by step

How to call United Kingdom from abroad

International dialing is a four-step process.
Use + on mobile to skip the exit code entirely.

Step 01

Exit code

Dial from US/Canada (or use +)

Step 02

+44

Country code

United Kingdom international prefix

Step 03

Area / city code

Local routing prefix

Step 04

7123 4567

Local number

Subscriber number

dialing-example.txt

International format

00—44—20—7123 4567

Shorthand (works from any device): +44 20 7123 4567

Why letsdial

Benefits of calling United Kingdom
with letsdial

Start free trial

Get a local +44 number

A London +44 20 or Manchester +44 161 caller ID signals a genuine UK business — essential in a market where unknown international calls are routinely screened.

United Kingdom and 50+ countries, one plan

Cover the UK across England, Scotland, Wales, and Northern Ireland plus 50+ global markets from one letsdial subscription.

Full call analytics

Track every UK call in GMT/BST — monitor answer rates, peak hours, and agent performance across all four nations.

Works on any device

Mobile app, desktop, or IP phone — your +44 number works seamlessly for your team whether they're in London or anywhere else.

Unified Communications

One platform. Every call, message and team — connected.

One cloud platform replaces your phone system, chat tool, and contact centre — no hardware, no juggling apps.
Reach United Kingdom and 50+ countries from one dashboard.

50+

Countries covered

99.9%

Uptime SLA

2 min

Setup time

Hardware needed

Voice & Video Calls

Crystal-clear HD calls to United Kingdom and 50+ countries from one number.

Team Messaging

Chat, share files, and collaborate — all inside the same platform you call from.

Real-Time Analytics

Live dashboards for call volumes, answer rates, and agent performance.

Global Number Coverage

Local +44 numbers plus 50+ country codes — managed from one dashboard.

Format reference

United Kingdom & neighbouring countries

UK numbers under +44 use a variable-length national numbering plan. London uses 020 + 8-digit local number; other cities vary. Always drop the leading 0 from the area code when dialling from abroad.

CountryLocal formatInternational format

United Kingdomcurrent7123 4567+44 20 7123 4567

United States555-1234+1 212 555 1234

Canada555-1234+1 416 555 1234

Australia9123 4567+61 2 9123 4567

Germany1234 5678+49 30 1234 5678

France23 45 67 89+33 1 23 45 67 89

Good to know

Tips for calling United Kingdom

4 things to check before you dial internationally

Always drop the leading 0 when dialling from abroad

UK area codes begin with 0 domestically (020 London, 0121 Birmingham) — that trunk prefix must be dropped when calling from abroad. 020 7946 0000 becomes +44 20 7946 0000.

WhatsApp and email precede calls

UK business culture increasingly relies on WhatsApp or LinkedIn messages before a voice call. A brief message first — especially in professional services and tech — significantly raises pickup rates.

Show a local +44 caller ID

UK recipients routinely screen unknown international calls. A letsdial +44 20 (London) or +44 161 (Manchester) caller ID signals a UK business and is far more likely to be answered.

UK observes BST in summer

The UK is GMT (UTC+0) in winter and BST (UTC+1) in summer. Business hours are 9 AM–5 PM. From New York (ET), the UK is consistently 5 hours ahead year-round.

Market data

United Kingdom communication insights

97%

Internet penetration

96% of the UK population uses the internet, ranking among the highest in Europe.

95%

Mobile users

94% of UK residents use mobile phones, with 5G networks expanding rapidly across cities.

76%

Smartphone owners

76% of UK adults own smartphones, supporting mobile-first professional communication.

96%

Digital businesses

94% of UK businesses have adopted digital tools for communication and operations.

Global directory

List of Country Codes

50+ countries listed with their international dial prefix and ISO code.

Filter by letter or search to find any country code instantly.

United Kingdom calling FAQs

Frequently asked about United Kingdom

UK numbers are written domestically with a leading '0' (e.g., 020 7946 0000 for London), but that '0' is a trunk prefix used only within the UK national network. When dialing internationally, replace it with the country code +44, making the number +44 20 7946 0000. letsdial's dialer automatically handles this conversion if you paste in a domestic UK format.

Get a local United Kingdom number

Get a local United Kingdom number in minutes.

Build trust with United Kingdom customers using a local +44 virtual phone number — from the same letsdial dashboard your whole team already uses.

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Looking up US area codes? Browse all US area codes →

United Kingdom

United Kingdom

How to call United Kingdom from abroad

Benefits of calling United Kingdomwith letsdial

Get a local +44 number

United Kingdom and 50+ countries, one plan

Full call analytics

Works on any device

One platform. Every call, message and team — connected.

United Kingdom & neighbouring countries

Tips for calling United Kingdom

Always drop the leading 0 when dialling from abroad

WhatsApp and email precede calls

Show a local +44 caller ID

UK observes BST in summer

United Kingdom communication insights

List of Country Codes

Frequently asked about United Kingdom

Get a local United Kingdom number in minutes.

Benefits of calling United Kingdom
with letsdial