Telephone numbers in the United Kingdom

Telephone numbers in the United Kingdom are administered by the Office of Communications (Ofcom). 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.

"+44" redirects here. For the band, see +44 (band).

United Kingdom telephone numbers
Telephone Dialling Codes in the United Kingdom
Location
CountryUnited Kingdom
ContinentEurope
RegulatorOfcom
TypeOpen
NSN length7, 9, 10[notes 1]
Formatvarious, see text
Numbering planThe National Telephone Numbering Plan
Last updated18 September 2010
Access codes
Country calling code+44
International call prefix00
Trunk prefix0
List of United Kingdom dialing codes

The numbers are of variable length. Local numbers are supported from land-lines or numbers can be dialled with a '0'-lead prefix that denotes either a geographical region or another service. Mobile phone numbers have their own prefixes which are not geographical and are completely portable between providers.

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