London telephone area and exchange codes - from the Post Office telephone directory for London, 1914 | Coding, London, Telephone
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London telephone area and exchange codes - from the Post Office telephone directory for London, 1914
The map and exchange codes from the 1914 London telephone directory showing the extent of the area served and the beginning of the named and coded exchanges in the Central area. The London directory is BT far and away the largest U.K. Directory of its day - and the use of the telephone would soon expand massively under the demand of wartime. This directory was issued just over a year after the effective nationalisation of the phone system when the Post Office ( who had run services alongside…
