Country code guide are providing you a detailed information on country & area codes in United-Kingdom, you find that most people have a series of two digits from their phone number in GB (for example, +44). There is no longer distance charge from the United-Kingdom phone number to call the landline and mobile number in United-Kingdom (apart from customer service numbers, the rate can be charged per minute). The process is similar to calling from Landline: initial country code + destination country code + phone number.