The Open Guide to London: the free London guide - Differences between Version 17 and Version 6 of Telephone Area Code For London
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<tr><td>Up to 1989</td><td>01</td><td>Seven-digit local numbers.</td></tr> <tr><td>1989 to 1992</td><td>071 and 081</td><td>London was split in two to double the amount of available numbers.</td></tr> <tr><td>1992 to 1999</td><td>0171 and 0181</td><td>National codes were all changed to add a 1 after the initial 0.</td></tr> <tr><td>June 1999 to April 2000</td><td>020 with 7 or 8.</td><td>Introductory period - the previous dialling codes continued to work. Local numbers were still dialled as 7 digits, e.g. 123 4567 <tr><td>2000 to present</td><td>020</td><td>Eight-digit local numbers. One code for all of London.</td></tr> |
<tr><td>Up to 1989</td><td>01</td><td> </td></tr> <tr><td>1989 to 1992</td><td>071 and 081</td><td> </td></tr> <tr><td>1992 to 1994</td><td>0171 and 0181</td><td>National codes were all changed to add 1 after the 0</td></tr> <tr><td>1994 to 1997</td><td>020 with 7 or 8.</td><td>Introductory period - the previous dialling codes continued to work. Local numbers were still dialled as 7 digits, e.g. 123 4567 <tr><td>1997 to present</td><td>020</td><td> </td></tr> |
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In 1999, the exchange codes were properly reorganised to be 4 digits long, with the local number 8 digits long. It is no longer possible to determine the location of a subscriber within London based on the area code. |
In 1997, the exchange codes were properly reorganised to be 4 digits long, with the local number 8 digits long. It is no longer possible to determine the location of a subscriber within London based on the area code. |
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=== Outer London === Some outer London boroughs are partly covered by other codes: *01322 [Dartford]: '''Bexley''' (Crayford, Erith, Northumberland Heath, Slade Green, Barnes Cray, Belvedere) *01689 [Orpington]: '''Bromley''' (Orpington, Farnborough); '''Croydon''' (New Addington) *01708 [Romford]: '''Havering''' (Romford, Rainham, Hornchurch, Upminster, Harold Wood, Gidea Park) *01895 [Uxbridge]: '''Hillingdon''' (Ruislip, Uxbridge, Harefield, West Drayton, Cowley) *01923 [Watford]: '''Hillingdon''' (Northwood) *01959 [Westerham]: '''Bromley''' (Biggin Hill, Cudham) === Local calls from 020 === All the following codes are considered local when dialled from 020 numbers: *01322 Dartford *01372 Esher *01689 Orpington *01707 Potters Bar *01708 Romford *01727 St Albans *01737 Redhill *01753 Slough *01784 Staines *01883 Caterham *01895 Uxbridge *01923 Watford *01932 Weybridge *01959 Westerham *01992 Hoddesdon |
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edit_type='Normal edit' |
edit_type='Minor tidying' |
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host='79.73.157.64' |
host='80.40.6.37' |
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major_change='1' |
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| == Line 27 == | == Line 27 == |
| website='' summary='' | website='' summary='' |
History
Before 1989, there was one dialling code for London: 01, plain and simple. Admittedly getting particular numbers allocated was a pain, but it was due to overcrowding in the number range that the numbers were split into inner and outer London. (See the page Locale Docklands for a reference to this.)
From 1989, the dialling codes changed FOUR times:
| Date | Code | Notes |
|---|---|---|
| Up to 1989 | 01 | |
| 1989 to 1992 | 071 and 081 | |
| 1992 to 1994 | 0171 and 0181 | National codes were all changed to add 1 after the 0 |
| 1994 to 1997 | 020 with 7 or 8. | Introductory period - the previous dialling codes continued to work. Local numbers were still dialled as 7 digits, e.g. 123 4567 |
| 1997 to present | 020 |
In 1997, the exchange codes were properly reorganised to be 4 digits long, with the local number 8 digits long. It is no longer possible to determine the location of a subscriber within London based on the area code.
It can be a good indicator of how long a firm has been in business if it has a sign using one of the older dialling code conventions (and also of how much they care about their frontage).
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