Telephone numbers in the United Kingdom - Wikipedia, the free encyclopedia

1 Overview 2 Format 2.1 Geographic numbering 2.1.1 Standard geographic numbers 2.1.1.1 Four-digit area codes 2.1.1.2 Three-digit area codes 2.1.1.3 Two-digit area codes 2.1.1.4 Five-digit area codes 2.1.2 National dialling only ranges 2.2 Mobile telephone

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