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44 country code: How to call the UK from abroad

Learn how to call UK numbers from abroad using the +44 country code. Get dialling formats, area codes, mobile tips & common mistakes to avoid.

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Need to call someone in the United Kingdom from abroad? You'll need to use the 44 country code to connect successfully. Whether you're reaching friends, family, or business contacts in England, Scotland, Wales, or Northern Ireland, understanding how to properly dial UK numbers is essential for international communication.

What is the 44 country code?

The 44 country code is the international dialling code assigned to the UK by the International Telecommunication Union (ITU). When you're calling from any other country, you must prefix the local UK number with 44 to route your call through the international telephone network.

Here's what you need to know about country code 44:

  • Covers the entire UK: England, Scotland, Wales, and Northern Ireland
  • Must replace the leading zero: UK numbers start with 0 domestically, but you drop this when using 44
  • Works for all UK numbers: landlines, mobiles, and business lines
  • Required for international calls: You cannot reach UK numbers from abroad without using 44

The key rule to remember is that when you use country code 44, you must omit the leading '0' that appears in all UK phone numbers when dialled domestically. For example, a London number that appears as 020 7946 0958 within the UK becomes +44 20 7946 0958 when called internationally.

How to call the UK from abroad

The standard format for calling UK numbers internationally follows this pattern:

[International Exit Code] + [44] + [Area Code without 0] + [Local Number]

Your international exit code depends on which country you're calling from:

From the United States or Canada:

  • Dial: 011 + 44 + UK number (without the leading 0)
  • Example: To call London number 020 7946 0958, dial 011 44 20 7946 0958

From European Union countries:

  • Dial: 00 + 44 + UK number (without the leading 0)
  • Example: From Germany to the same London number, dial 00 44 20 7946 0958

From India:

  • Dial: 00 + 44 + UK number (without the leading 0)
  • Example: 00 44 20 7946 0958

From Australia:

  • Dial: 0011 + 44 + UK number (without the leading 0)
  • Example: 0011 44 20 7946 0958

Hot tip: Most modern smartphones allow you to use the '+' symbol instead of your country's exit code. Simply dial +44 followed by the UK number without the leading zero.

UK area codes you need to know (landlines)

Understanding UK area codes for landline numbers helps you identify which region you're calling and ensures you dial correctly. Here are the major UK area codes you'll encounter:

City/Region Area Code Example International Format
London 20 +44 20 XXXX XXXX
Birmingham 121 +44 121 XXX XXXX
Manchester 161 +44 161 XXX XXXX
Glasgow 141 +44 141 XXX XXXX
Edinburgh 131 +44 131 XXX XXXX
Liverpool 151 +44 151 XXX XXXX
Cardiff 29 +44 29 XXXX XXXX
Belfast 28 +44 28 XXXX XXXX
Bristol 117 +44 117 XXX XXXX
Leeds 113 +44 113 XXX XXXX

Remember that these area codes appear after the 44 country code and never include the initial 0 that you see in domestic UK dialling.

Common mistakes when dialling UK numbers

Avoid these frequent mistakes that prevent successful connections to UK numbers:

Including the leading zero: The most common mistake is dialling +44 0 followed by the rest of the number. This creates an invalid number format that won't connect.

Using incorrect exit codes: Each country has its own international exit code. Using 00 when calling from the US (which requires 011) will result in call failure.

Incomplete area codes: Some callers truncate area codes, especially longer ones like Birmingham's 121. Always include the complete area code after 44.

Network restrictions: Your mobile carrier or VoIP service might block international calls by default. Check with your provider if calls aren't connecting despite correct dialling.

Time zone confusion: Calling during UK nighttime hours may result in unanswered calls, even if your dialling format is correct.

How to call UK mobile numbers using 44

UK mobile numbers follow a specific format that's important to understand for international calling. All UK mobile numbers begin with 07 when dialled domestically, which becomes 447 in international format.

UK Mobile Number Structure:

  • Domestic format: 07XXX XXXXXX
  • International format: +44 7XXX XXXXXX

Examples of calling UK mobile numbers:

  • From US: 011 44 7700 900123
  • From EU: 00 44 7700 900123
  • Using + symbol: +44 7700 900123

When saving UK mobile numbers in your phone's contacts, use the international format (+44 7XXX XXXXXX) so the number works whether you're calling domestically within the UK or internationally from abroad.

Free ways to call the UK

Before paying for expensive international calls, consider these free alternatives:

Voice over Internet Protocol (VoIP) Apps:

  • WhatsApp: Free voice and video calls over WiFi or data
  • FaceTime: Free for iPhone/iPad/Mac users
  • Google Meet: Free video calls with phone dial-in options
  • Viber: Free calls between Viber users

When VoIP works best:

  • Both parties have stable internet connections
  • Calling friends or family who use smartphones
  • Non-urgent conversations where call quality fluctuations are acceptable

When traditional calling is better:

  • Emergency situations requiring immediate connection
  • Business calls where professional quality is essential
  • Calling landlines or people without smartphones
  • Areas with poor internet connectivity

Emergency numbers and special codes in the UK

Understanding UK number types helps you dial correctly and know what to expect:

Emergency Numbers:

  • 999: Primary emergency number (police, fire, ambulance)
  • 112: European emergency number (works in UK)
  • 101: Non-emergency police contact

When calling emergency numbers from abroad, you still need to use +44, but these calls receive priority routing. However, for true emergencies while visiting the UK, calling locally using 999 or 112 is faster than international routing.

Best time to call the UK from other countries

Timing your calls appropriately ensures better connection rates and recipient availability:

UK Time Zone: Greenwich Mean Time (GMT) in winter, British Summer Time (BST/GMT+1) in summer

Business Hours: Generally 9:00 AM to 5:00 PM, Monday through Friday

Optimal Calling Windows by Region:

From US East Coast:

  • UK morning (9 AM-12 PM) = US early morning (4 AM-7 AM)
  • UK afternoon (1 PM-5 PM) = US morning (8 AM-12 PM)

From US West Coast:

  • UK morning = US very early morning (1 AM-4 AM)
  • UK afternoon = US early morning (5 AM-9 AM)

From India:

  • UK morning = India afternoon (2:30 PM-5:30 PM)
  • UK evening = India late evening (9:30 PM-12:30 AM)

From Australia (Sydney):

  • UK morning = Australia evening (8 PM-11 PM)
  • UK evening = Australia early morning (2 AM-5 AM)

Lastly

Understanding the 44 country code system ensures your international calls to the UK connect successfully every time. Whether you're calling London business contacts, relatives in Edinburgh, or friends in Cardiff, following these guidelines will help you communicate effectively across international boundaries.

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