How to Dial the UK
To call the UK, start by dialing the exit code for your country, which is 011 in the U.S. Next, enter the country code for the UK, which is 44, followed by the area or mobile phone code. Then, dial the 10 digit phone number to complete the call. If you live in the UK and want to call another country within the UK, enter 0, followed by the area code and the 10-digit phone number.
Dial your country's exit code. An exit code permits you to dial out of your country and is a necessary part of any international phone call, no matter which country you end up dialing. Before dialing specific digits to connect you to your UK contact, you will need to dial the exit code specific to the country you are dialing out of. There is no single exit code that works with every country. You will need to find out the specific exit code to use for your country. Note, however, that some countries do share exit codes with others. The exit code is always dialed first. As such, the basic format to use is: EC-xx-xxxxxxxxxx, with “EC” standing for “exit code.” Example: The exit for the United States is “011.” When dialing the UK from the US, you would begin by dialing 011-xx-xxxxxxxxxx. Use the country code for the United Kingdom. The country code for the entire United Kingdom is "44." Dial this immediately after your exit code in order to direct the phone call to the UK. Note that this country code is shared by all countries within the UK. Example: When dialing from the US, begin with 011-44-xxxxxxxxxx. Include the area code or mobile code. In order to reach a land line in the UK, you will need to know which geographic region that land line exists in. This region will determine the correct area code to dial. Area codes can vary in length from two to five digits. The correct format for dialing to a country in the UK is EC-44-AC-xxxxxxxx, with "AC" standing for "area code." Note, however, that if you need to dial a mobile phone, you will dial a mobile code instead of an area code. You will need to inquire about the correct mobile code when acquiring the phone number, but most mobile codes are four digits long and begin with the number 7. That 7 is usually followed by a 4, 5, 6, 7, 8, or 9. Dial the remaining phone number. The rest of the phone number is simply the subscriber's personal phone number. Dial it as you would dial any local subscriber's number to complete the phone call. The personal phone number for a land line is usually 10 digits long, not including the area code. The personal phone number for a mobile phone is usually 10 digits long, including the mobile code. Skip the exit code and country code. If you live in the United Kingdom and need to dial another country within the United Kingdom, you do not need to dial an exit code or country code, even though the phone call is, in some sense, international. Skip these two pieces of information when placing the call. Dial the trunk code. Instead of dialing an exit code and country code, you need to dial “0” before placing a call to another country within the United Kingdom. This is a “trunk code” which signifies that your call is a “National Destination Code” (NDC) or, in other words, a call placed within the United Kingdom. The basic format for a call from one UK country to another is: 0-xxxxxxxxxx. Use the right area code or mobile code. When dialing a land line in the UK, you need to dial the area code of the geographic region that land line exists in. Area codes are usually two to five digits long. The correct format for dialing to a UK country from another UK country is 0-AC-xxxxxxxx, with "AC" standing for "area code." If dialing a mobile phone, replace the area code with a mobile code. You will need to find out the correct mobile code when you receive the phone number, but most mobile codes are four digits long and begin with the number 7. That 7 is usually followed by the number 4, 5, 6, 7, 8, or 9. Input the remaining phone number as usual. Dial the rest of the phone number as you would dial any local number. The remainder should just be the subscriber's personal phone number. A land line will usually be 10 digits long without the area code. A mobile phone will usually be 10 digits long including the mobile code. Contact someone from the Channel Islands. There are two area codes for the Channel Islands and Isle of Man. The code for Guernsey is 1481. The code for Jersey is 1534. Dial an area code for Northern Ireland. There are multiple area codes for regions in Northern Ireland. These area codes include, but are not limited to: Antrim: 28(94) Ballycastle: 28(20) Belfast: 28(90) or 28(95) Larne: 28(90) Lisburn: 28(92) Armagh: 28(37) Saintfield: 28(97) Banbridge: 28(40) Newcastle Co Down: 28(43) Downpatrick: 28(44) Kesh: 28(68) Londonderry: 28(71) Omagh: 28(82) Find the right area code for Wales. There are also multiple area codes used within Wales. Several of these codes include, but are not limited to: Cemmaes Road: 1650 Brecon: 1874 Caernarfon: 1286 Lampeter: 1570 Ammanford: 1269 Wrexham: 1978 Cardigan: 1239 Rhyl: 1745 Pontypridd: 1443 Newport: 1633 Barmouth: 1341 Monmouth: 1600 Machynlleth: 1654 Milford Haven: 1646 Knighton: 1547 Llandrindod Wells: 1597 Look up the right Scotland area code. There are many area codes within Scotland, including but not limited to: Fraserburgh: 1346 Dundee: 1382 Montrose: 1674 Keith: 1542 Lauder: 1578 Alloa: 1259 Helensburgh: 1436 Thornhill: 1848 St. Andrews: 1334 Isle of Arran: 1770 Castlebay: 1871 Isle of Lewis: 1851 Kirkcudbright: 1557 Nairn: 1667 Orkney: 1856 Peebles: 1721 Perth: 1738 Fortrose: 1381 St. Boswells: 1835 Shetland: 1806 Stirling: 1786 Lairg: 1549 Bathgate: 1506 Call someone in England. You will need to look up the right area code when calling someone in England. There are many different regional area codes, including but not limited to: Bedford: 1234 Newbury: 1635 Buckingham: 1280 Cambridge: 1223 Derby: 1332 Dorchester: 1305 Durham: 191(3) Brentwood: 1277 London Greater: 20 Gloucester: 1452 Winchester: 1962 Canterbury: 1227 Dover: 1304 Dartford Kent: 1322 Ashford Kent: 1233 Lancaster: 1524 Uxbridge: 1895 Norwich: 1603 Northampton: 1604 Bellingham: 1434 Nottingham: 115 Oxford: 1865 Bath: 1225 Bristol: 117 Stowmarket: 1449 Guildford: 1483 Eastbourne: 1323 Brighton: 1273 Warwick: 1926 Birmingham: 121 Coventry: 24 Salisbury: 1722 Meriden: 1676 Worcester: 1905 York: 1904 Scarborough: 1723 Middlesbrough: 1642 Call the UK from the US or Canada using "011. " The United States and Canada both use "011" as an exit code, as do several other countries including US territories. Other countries that use this exit code include: American Samoa Bahamas Barbados Bermuda British Virgin Islands Cayman Islands Domincan Republic Grenada Guam Jamaica Montserrat Puerto Rico US Virgin Islands Dial "00" from most other countries. Most countries use "00" as their exit code, so you will need to dial this exit code when placing an international call to the UK from the following countries: Algeria Aruba Bangladesh Belgium Bolivia Bosnia Central African Republic China Costa Rica Czech Republic Denmark Dubai Egypt France Germany Greece Greenland Guatemala Honduras Iceland India Ireland Italy Kuwait Malaysia Mexico Netherlands New Zealand Nicaragua Norway Pakistan Philippines Romania Saudi Arabia South Africa Turkey  by dialing "0011. Call the UK from Australia " Australia's exit code is unique and not presently shared by any other country. Use "010" to call the UK from Japan. Japan's exit code is also unique to itself and not presently used by other countries. Dial from various other Asian countries using "001" or "002. " Several countries throughout Asia use one or both of these exit codes. Cambodia, Hong Kong, Mongolia, Singapore, and Thailand use "001." Taiwan uses "002." South Korea uses both "001" and "002." Check with your service provider to determine which exit code you need for your telephone service plan. Place a call to the UK from Indonesia. There are several exit codes used from within Indonesia. The correct one will depend on the service provider you use. Bakrie Telecome users need to dial "009." Indosat users need to dial "001" or "008." Telkom users need to dial "007." Dial the UK from Brazil. There are multiple exit codes used from within Brazil. Use the exit code that corresponds to your telephone service provider. Brasil Telecom users should dial "0014." Telefonica users should dial "0015." Embratel users should dial "0021." Intelig users should dial "0023." Telmar users should dial "0031." Call the UK from Chile. You will need to choose the right exit code to dial out from Chile with based on your service provider. Entel users should dial "1230." Globus users should dial "1200." Manquehue users should dial "1220." Movistar users should dial "1810." Netline users should dial "1690." Telmex users should dial "1710." Place a call to the UK from Columbia. Columbia has multiple exit codes, so you will need to choose the correct one based on which telephone service provider you use. UNE EPM users should dial "005." ETB users should dial "007." Movistar users should dial "009." Tigo users should dial "00414." Avantel users should dial "00468." Claro Fixed users should dial "00456." Claro Mobile users should dial "00444." Call the UK from Israel. There are multiple exit codes used to dial the UK from within Israel, but the correct one will depend on your service provider. Kod Gisha users should dial "00." Smile Tikshoret users should dial "012." NetVision users should dial "013." Bezeq users should dial "014." Xfone users should dial "018." 
Dial your country's exit code. Use the country code for the United Kingdom. Include the area code or mobile code. Dial the remaining phone number. Skip the exit code and country code. Dial the trunk code. Use the right area code or mobile code. Input the remaining phone number as usual. Contact someone from the Channel Islands. Dial an area code for Northern Ireland. Find the right area code for Wales. Look up the right Scotland area code. Call someone in England. Call the UK from the US or Canada using "011. Dial "00" from most other countries.  by dialing "0011. Use "010" to call the UK from Japan. Dial from various other Asian countries using "001" or "002. Place a call to the UK from Indonesia. Dial the UK from Brazil. Call the UK from Chile. Place a call to the UK from Columbia. Call the UK from Israel. 