Complete guide on how to dial the United Kingdom with country code, mobile and geographic area codes, phone number format...

How to call United Kingdom from United States 011 - 44 - phone number 01144 and +44 are used interchangeably to dial British phone numbers from a mobile (more on the plus sign).

How to call United Kingdom from South Africa 00 - 44 - phone number 0044 and +44 are used interchangeably to dial British phone numbers from a mobile (more on the plus sign).

How to call United States from United Kingdom 00 - 1 - phone number 001 and +1 are used interchangeably to dial US phone numbers from a mobile (more on the plus sign).

How to call United Kingdom from Australia 0011 - 44 - phone number 001144 and +44 are used interchangeably to dial British phone numbers from a mobile (more on the plus sign).

Below is a list of country codes, international direct dialing prefixes and national trunk prefixes. Click on any country name for detailed dialing instructions, area codes, telephone books..

How to call United Kingdom from Singapore 000 - 44 - phone number 00044 and +44 are used interchangeably to dial British phone numbers from a mobile (more on the plus sign).

How to call Nigeria from United Kingdom 00 - 234 - phone number 00234 and +234 are used interchangeably to dial Nigerian phone numbers from a mobile (more on the plus sign).

How to call Slovakia from United Kingdom 00 - 421 - phone number 00421 and +421 are used interchangeably to dial Slovakian phone numbers from a mobile (more on the plus sign).

How to call United Kingdom from Colombia 00Y (YY) - 44 - phone number 00Y (YY)44 and +44 are used interchangeably to dial British phone numbers from a mobile (more on the plus sign).