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  2. List of telephone exchanges in London - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone...

    When dialling a UK number from abroad the zero is omitted and replaced by the calling country's international call prefix followed by 44, the country code for the UK. Thus a call to the Euston exchange discussed above from the United States would be to 011 (US international prefix) 44 20 (London) 73871234.

  3. List of dialling codes in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/List_of_dialling_codes_in...

    This is a list of telephone dialling codes in the United Kingdom and the Crown ... Used up to the 1960s for internal telephones in the London Kingsway tunnels (LTK ...

  4. History of telephone numbers in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/History_of_telephone...

    The first major change was in May 1990, when the London 01 area code was replaced with 071 and 081. Local numbers remained seven digits long. Exchanges in central London used the 071 code. The remaining exchanges now used the 081 code and formed a ring around the 071 area. [34]

  5. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Telephone exchange names often provide a historical, memorable, and even nostalgic context, personal connection, or identity to a community. They can therefore often be found in popular culture, such as music, art, and prose. An old 2L-5N format appears in the song title "PEnnsylvania 6-5000" (phone number PE 6-5000), recorded by Glenn Miller.

  6. All-figure dialling - Wikipedia

    en.wikipedia.org/wiki/All-figure_dialling

    At the same time, many local exchange codes were altered in order to group them into geographic sectors (e.g. GROsvenor became 499 rather than 470) to eliminate the need for all incoming calls to be routed via central London. In the Director areas the old codes continued to work in parallel with new codes until 1970 when the "ANN: All-figure ...

  7. 020 - Wikipedia

    en.wikipedia.org/wiki/020

    The 020 area code fully replaced older area codes for London on 22 April 2000, following multiple telephone number changes during the 1990s. [ notes 1 ] As is the case for other codes in the UK, the 020 area code may also be used for services without any physical presence in the area, such as private networks or virtual numbering. [ 1 ]

  8. PhONEday - Wikipedia

    en.wikipedia.org/wiki/PhONEday

    PhONEday followed a change made in May 1990, when the old London area code 01 was released from use, permitting all United Kingdom geographic numbers to begin with this prefix. Originally planned in 1991 to take place in 1994, [ 2 ] in 1992 the change was postponed until the Easter Sunday bank holiday in 1995.

  9. Telephone numbers in the United Kingdom - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_the...

    The new area code is much shorter than the old one, and begins 02 unlike the previous 01 area codes. Numbers consist of a two-digit area code matching the pattern 02x , and an eight-digit subscriber number, and this is known as 2+8 format.