Country codes. The most important part to remember is to add the international country code. A mobile phone number in the United Kingdom always starts with the digits '07', for instance '07911 123456'. read more
Wikipedia is a good reference covering UK phone numbers Telephone numbers in the United Kingdom The correct way to write a number is 07xx xxx xxxx for domestic use or +44(0)7xx xxx xxxx for use outside the UK where most countries you will dial 00447xxxxxxxxx. read more
Telephone numbers in the United Kingdom are administered by the UK government's Office of Communications . For this purpose Ofcom established a telephone numbering plan, known as the National Telephone Numbering Plan, which is the system for assigning telephone numbers to subscriber stations. read more
All mobile numbers in the UK start 07, or +44 7 followed by 9 digits. Although it is common to see the number divided into a form like 07123 456789 to look like an old geographic number, there is no formal divide between code and number and that is just a convenient way to write and remember numbers. read more
Landlines are the code normally first then the number as 3 digits then 4. Eg for Manchester it is 0161 code then your number after. Working on this with the 11 mobile digits I normally use the first 5 digits as a code then 3 digits then 3 digits. read more
The UK mobile phone number ‘07911 123456’ in international format is ‘+44 7911 123456’, so without the first zero. Secondly in the E.164 notation all spaces, dashes [‘-‘] and parentheses [ ‘(‘ and ‘)’] are removed, besides the leading ‘+’ all characters should be numeric. read more