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In the United Kingdom, [[telephone number]]s 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
{{TOC limit|2}}
==Structure==
All mobile numbers, nearly all geographic numbers, and nearly all non-geographic numbers have
{| class="wikitable" style="margin-left: 1.5em;"
|-
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|-
! scope="row" |05
| Corporate numbering and [[Voice over IP|VoIP]] services;
|-
! scope="row" |06
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|-
! scope="row" |08
| [[Toll-free telephone number|
|-
! scope="row" |09
| Premium
|}
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|{{mono|(01257) xx xxxx}}
|[[Chorley]]
|-Dua
|{{mono|(01382) xx xxxx}}
|[[Dundee]]
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|}
In the United Kingdom, the "area code" is often referred to as a "[[subscriber trunk dialling]] code" (STD code) or a "dialling code".
The code allocated to the largest population is ([[020]]) for [[London]]. The code allocated to the largest area is (028) for all of [[Northern Ireland]]. The UK Numbering Plan also applies to three British [[Crown dependencies]] – [[Bailiwick of Guernsey|Guernsey]], [[Jersey]], and the [[Isle of Man]] – even though they are not part of the UK.
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|}
Number ranges starting 01 can have [[National Significant Number|National Significant Number (NSN)]] length of 10 or (very rarely) 9 digits. NSN is the number of digits after the leading 0 trunk code or +44 international prefix. The 0800 range can have NSN length as 10, 9, or 7 digits. The 0845 range can have NSN length as 10 or 7 digits. The 0500 range had NSN length as 9 digits only, and was withdrawn from use on 3 June 2017. All other UK numbers have NSN length of 10 digits. There are no telephone numbers in the UK with an NSN length of 8 digits.
==Geographic numbers==
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* '''(01xxx)''' xxx xxx
This is the format used by most areas. It has a four-digit area code (after the initial zero) and a six digit subscriber number, and is known as 4+6 format. These area codes were changed by adding a "1" directly after the initial zero as a part of [[PhONEday]] in 1995. Just short of 581 areas use this format, and the area codes range from 01200 to 01998. Almost all (01xxx) area codes now have only six
{| class="wikitable" style="width: auto; margin-left: 1.5em;"
|-
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! scope="row" | 01244
| [[Chester]] || 24 = CH ||
|-▼
! scope="row" | 01275
| [[Clevedon]]|| 27 = BR ||
|-
! scope="row" | 01382
Line 198 ⟶ 202:
|-
! scope="row" | 01387
| [[Dumfries]] (mixed) || 38 = DU ||
|-
! scope="row" | 01452
Line 216 ⟶ 220:
|-
! scope="row" | 01539
| [[Kendal]] (mixed) || 53 = KE ||
|-
! scope="row" | 01582
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|-
! scope="row" | 01697
| [[Brampton, Carlisle|Brampton]], North West (mixed) || 69 = NW ||
|-
! scope="row" | 01733
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|-
! scope="row" | 01782
| [[Stoke-
|-
! scope="row" | 01792
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{| class="wikitable" style="width: auto; margin-left: 1.5em;"
▲|-
! scope="row" | 01204
| [[Bolton]] || 20 = BO || 61–64 ||
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|-
! scope="row" | 01524
| [[Lancaster, Lancashire|Lancaster]] (mixed) || 52 = LA || 32–37, 39, 60–69 ||
|-
! scope="row" | 01527
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|-
! scope="row" | 01768
| [[Penrith, Cumbria|Penrith]] (mixed) || 76 = PN || 882, 883, 884, 886, 887, 888 ||
|-
! scope="row" | 01827
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|-
! scope="row" | 01946
| [[Whitehaven]] (mixed) || 94 = WH || 61–68 ||
|-
! scope="row" | 01949
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This is the geographic number format for the first round of five large cities moved to [[all figure dialling]] in the 1960s, and subsequently also used in the metropolitan county of Tyne and Wear, eastern County Durham and south-eastern Northumberland from the 1980s onwards. These six areas have a three-digit area code matching the pattern ''1x1'' (after the initial zero) and a seven digit subscriber number, and this is known as 3+7 format. These area codes were changed by adding a "1" directly after the initial zero as a part of PhONEday in 1995.
{| class="wikitable" style="width: auto; margin-left: 1.5em;"
!Code!!Geographical area!!Former code(s)
|-
! scope="row" | 0121
| [[Birmingham]] ||
|-
! scope="row" | 0131
| [[Edinburgh]] ||
|-
! scope="row" | 0141
| [[Glasgow]] ||
|-
! scope="row" | 0151
| [[Liverpool]] ||
|-
! scope="row" | 0161
| [[Manchester]] ||
|-
! scope="row" | 0171
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|-
! scope="row" | 0191
| County of [[Tyne and Wear]]
|}
* '''(011x)''' xxx xxxx
This is the geographic number format for the second round of large cities and towns moved to brand-new three-digit area codes. Five of these were moved in 1995 as a part of [[PhONEday]], with Reading then following a year later. At the time of the change, an extra digit was added to the subscriber number. These six areas have a three-digit area code matching the pattern ''11x'', with a seven-digit subscriber number, and this is known as 3+7 format. The first three digits of the local number identifies a small area within the town or city. The former Reading area code had already been changed once, by adding a "1" directly after the initial zero as a part of PhONEday in 1995.
{| class="wikitable" style="width: auto; margin-left: 1.5em;"
!Code!!Geographical area!!Former code(s)
|-
! scope="row" | 0113
| [[Leeds]] ||
|-
! scope="row" | 0114
| [[Sheffield]] ||
|-
! scope="row" | 0115
| [[Nottingham]] ||
|-
! scope="row" | 0116
| [[Leicester]] ||
|-
! scope="row" | 0117
| [[Bristol]] ||
|-
! scope="row" | 0118
| [[Reading, Berkshire|Reading]] ||
|}
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| [[Coventry]] || (024) 7xxx xxxx || 01203 (20 = CO)
|-
! rowspan="
| rowspan="
| (028) 25xx xxxx [[Ballymena]] || (01266) xxx xxx
|-
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|-
| (028) 37xx xxxx [[Armagh]] || (01861) xxx xxx
|-▼
| (028) 30xx xxxx [[Newry]] ||New number range
|-
| (028) 71xx xxxx [[Derry]]<ref>{{cite web | url=http://consumers.ofcom.org.uk/phone/numbering/telephone-area-codes-tool/ | title=Telephone area codes | publisher=Ofcom | access-date=1 August 2014}}</ref><ref>{{cite web | url=http://www.thephonebook.bt.com/publisha.content/en/search/uk_codes/index.bycounty.publisha?County=Co.+Londonderry | title=Co. Londonderry – UK Codes – The Phone Book from BT | publisher=British Telecom | access-date=1 August 2014}}</ref> || (01504) xxx xxx
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The above twelve area codes and their six 'parent' area codes (01387, 01524, 01539, 01697, 01768 and 01946) are known as 'Mixed' areas due to multiple area codes sharing the same SABC digits (i.e. the initial zero and the following four digits).
===National
These ranges have subscriber numbers beginning with the digits "0" or "1", e.g.:
{| class="wikitable" style="width: auto; margin-left: 1.5em;"
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|-
! scope="row" style="font-weight: normal;" | '''079xx''' xxx xxx
| Mobile phones (former 09xx—mostly [[EE
|-
! scope="row" style="font-weight: normal;" | '''07911''' 2xx xxx<br />'''07911''' 8xx xxx
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'''03xx''' is a range of non-geographic numbers introduced in 2007 as a cheaper alternative to the [[Shared-cost service|shared-cost]] non-geographic numbers (such as [[0870]] or [[0845]] numbers). In contrast to the 084x/087x range, calls to 03 numbers are considered local calls for billing purposes (i.e., like calls to a geographic number 01 or 02).<ref name="ofcom-09prs">{{cite web | url=http://stakeholders.ofcom.org.uk/binaries/consultations/entertainment_services/statement/statement.pdf | title=Conditions regulating Sexual Entertainment Services | author=[[Ofcom]] | publisher=Office of Communications | date=26 April 2007 | access-date=10 October 2010 | archive-url=https://web.archive.org/web/20110526094331/http://stakeholders.ofcom.org.uk/binaries/consultations/entertainment_services/statement/statement.pdf | archive-date=26 May 2011 | url-status=live}}</ref> This means that customers who are benefiting from inclusive minutes on mobile phone or landline calling plans are also able to call these numbers using their inclusive minutes.<ref name="intro03numbers">{{cite web | url=http://media.ofcom.org.uk/2007/02/13/ofcom-introduces-uk-wide-03-numbers/ | title=Ofcom introduces UK-wide 03 numbers | author=[[Ofcom]] | publisher=Office of Communications | date=13 February 2007 | access-date=28 July 2010 | archive-url=https://web.archive.org/web/20130813045353/http://media.ofcom.org.uk/2007/02/13/ofcom-introduces-uk-wide-03-numbers/ | archive-date=13 August 2013 | url-status=dead | df=dmy-all }}</ref>
There are
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|-
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There is one short "special" number in this range, '''0800 11 11''' for Childline.
Additionally, numbers in the range 0808 80x xxxx are reserved for not-for-profit helplines and as such are usually free to call from most mobile telephones.
===Fixed-rate or special-rate services===
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With the exception of 080x freephone numbers, 08xx numbers are charged above geographic rates, with some of the extra revenue going to the terminating telco. This additional revenue may be shared with the subscriber, but is often used instead to subsidise additional network services, such as [[fax]]-to-[[email]], [[virtual office]] applications, call queuing, voicemail and easy number redirection. None of these call management services is exclusive to 08xx numbers and they could be provided on any number range.
Special Services basic rate range:▼
{| class="wikitable" style="width: auto; margin-left: 1.5em;"
| rowspan=2|Up to 4.26p a minute (plus VAT), but fixed (e.g. always 3p/minute or always 4p/minute) from BT landline, other providers may charge more; up to 42p a minute from mobiles.▼
|-
!
|-
!
| Non-BT Discount Scheme—Internet Services incorporating unmetered access up to and including 5p for BT customers
|-
!
| rowspan=2|''
|-
!
|-
!
| Up to 4.26p a minute (plus VAT), varies daytime/evening/weekend, from BT landline, other providers may charge more; up to 42p a minute from mobiles.
|-
!
| Up to
▲|-
▲! scope="row" style="font-weight: normal;" |'''0842''' xxx xxxx
▲| Up to 4.26p a minute (plus VAT), but fixed (e.g. always 3p/minute or always 4p/minute) from BT landline, other providers may charge more; up to 42p a minute from mobiles.
|}
There were a few short "special" number in this range, such as '''0845 46 47''' for NHS Direct; this was closed in 2014 and replaced by [[NHS 111]], except in Wales where the transition took place in 2015.▼
▲There were a few short "special"
Special Services higher rate range:▼
{| class="wikitable" style="width: auto; margin-left: 1.5em;"
! scope="row" style="font-weight: normal;" |'''0870''' xxx xxxx
| Up to 8p a minute (plus VAT), varies daytime/evening/weekend (charged at no more than the caller would pay for a call to a Geographic Number) from landline; up to 42p a minute from mobiles.
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|-
! scope="row" style="font-weight: normal;" |'''0871''' 2xx xxxx<br />to<br />'''0871''' 9xx xxxx
| rowspan=3|Up to 8.5p a minute (plus VAT) but fixed (e.g. always 6p/minute or always 8.5p/minute) from BT landline, other providers may charge more; up to 50p a minute from mobiles.
|-
! scope="row" style="font-weight: normal;" |'''0872''' xxx xxxx
|-
! scope="row" style="font-weight: normal;" |'''0873''' xxx xxxx
|}
The usage of '''0871''', '''0872''' and '''0873''' numbers is regulated by [[PhonepayPlus]].<ref name="PP">{{cite web | url=http://www.phonepayplus.org.uk/ | title=PhonepayPlus – the UK premium rate phone number and service regulator | author=PP | publisher=[[PhonepayPlus]] | access-date=11 November 2012 | archive-url = https://web.archive.org/web/20140419021625/http://www.phonepayplus.org.uk/ | archive-date = 19 April 2014| url-status=live}}</ref>
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== Crown dependencies ==
Although calls from UK landlines to landlines in the islands are charged at the same rate as those to other UK landlines (i.e. they are not treated as international calls), calls may be excluded from calling plans offering unlimited UK fixed
Mobile operators may also charge more for calls to the islands and these calls are usually excluded from calling plans. Calls and SMS messages sent to island mobile phone numbers are not charged at the same rate as calls to UK mobile phone numbers.
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On the [[Isle of Man]], both fixed (01624) and mobile phone (07624) numbers can be dialled locally in the six-digit format.
==
[[Ofcom]] has also reserved certain number ranges for use in media productions, such as [[Radio drama|radio]] and [[television
In most of the large [[Cities in the United Kingdom|cities]] with three-digit area codes, a range of numbers is reserved, usually all the numbers starting with the digits '''496'''. For fictitious numbers in other areas not using three-digit area codes, the area code '''01632''' is reserved; this code is not in use, although 0632 was previously used for [[Newcastle upon Tyne]] until the late 1980s (63 = NE), and briefly reallocated for use by premium rate services in the 1990s. There are also reserved ranges for fictitious mobile, freephone, and premium rate numbers.<ref name="nb38-drama1999">{{
The [[General Post Office|Post Office]] even produced dial centre labels for use in advertisements and film / TV with a mythical exchange called VINcent plus four digits. The numerical equivalent of VIN was 846, and all the caller got was the speaking clock (i.e. 846 is also numerical equivalent of TIM) in the big city
At around the same time as the other [[Big Number Change]] changes, Ofcom revised their recommendations to update the prefixes, add additional areas and increase the size of the allocation from 10 to 1,000 numbers per block. Those changes are listed in the [[Big Number Change#Numbers for drama|Big Number Change]] article.
In ''[[Coronation Street]]'', the fictional Manchester suburb of [[Weatherfield]] uses the unallocated range
Mobile numbers beginning with 07700 are frequently seen in TV dramas. These numbers have been specifically set aside for TV and radio dramas.
== Special service numbers ==
Line 901 ⟶ 905:
The [[National Health Service (England)|National Health Service]] (NHS) can be reached on '''111''' for non-emergency calls (from landlines and mobiles only). In other European countries, the number 116 117 is used for a similar purpose.
The NHS has also launched a COVID-19 helpline on '''119''' relating to swabbing, so that these calls do not go through the 111 call centre.
Local [[Electric power distribution|electricity network operators]] can be reached on '''[[105 (telephone number)|105]]''' to report power cuts.<ref>{{cite news|url=https://www.telegraph.co.uk/news/2016/09/06/new-national-phone-line-launched-for-power-cuts/|title=New national phone line launched for power cuts|newspaper=[[The Daily Telegraph|The Telegraph]]|first=Lexi|last=Finnigan|date=6 September 2016|access-date=12 January 2018}}</ref>
Two telephone helplines within the regular code space have only eight digits
The number 159 ('Call 159') has been introduced to give a standard number for calling banks, in an effort to reduce scams where people are tricked into calling someone pretending to be their bank.<ref>{{Cite web|url=https://stopscamsuk.org.uk/159|title=159}}</ref>
Line 915 ⟶ 919:
Short codes beginning with '''1''' are reserved for telecom service providers' own functionality; some of the most well-known are codes for use with [[Caller ID|Caller Display]]:
{| class="wikitable" style="margin-left: 1.5em;"
!Code!!Function!!width=400|Notes
|-
!
| Withhold number ||
|-
!
| Release number ||
|-
!
| Last call information and return ||
|-
!
| 1471 erasure ||
|-
! 1477
| Automatic Call Trace
| Stores number (even if withheld) of nuisance caller at terminating exchange for subsequent investigation and enforcement, but service is seldom enabled by default.
|-
!
| Voicemail service || For people who do not have answering machines.<br />If there is a new message, the dial tone will be stuttered.
|-
!
| BT Call Protect || To divert nuisance calls to junk voicemail.
|-
Line 944 ⟶ 948:
|}
Many fixed
For fixed
== History ==
Line 964 ⟶ 968:
=== Others ===
* [[British Antarctic Territory]] '''
* [[British Indian Ocean Territory]] '''[[+246]]'''
* [[Falkland Islands]] and [[South Georgia and the South Sandwich Islands]] '''[[+500]]'''
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* [[Non-geographic telephone numbers in the United Kingdom]]
* [[Telecommunications in the United Kingdom]]
* [[Mobile number portability|Telephone number portability]]
* [[Telephone numbers in the Republic of Ireland|Telephone numbers in Ireland]]
* [[UK telephone code misconceptions]]—includes the common "0207" and "0208" misconceptions
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