Telecommunications in the United Kingdom
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Until 1982, the main civil telecommunications system in the UK was a state monopoly known (since reorganisation in 1969) as Post Office Telecommunications. Broadcasting of radio and television was a duopoly of the BBC and Independent Broadcasting Authority (IBA): these two organisations controlled all broadcast services, and directly owned and operated the broadcast transmitter sites. Mobile phone and Internet services did not then exist.
National Telephone Company (NTC) was a British telephone company from 1881 until 1911 which brought together smaller local companies in the early years of the telephone. Under the Telephone Transfer Act 1911 it was taken over by the General Post Office (GPO) in 1912.
British Rail Telecommunications was created by British Rail (BR). It was the largest private telecoms network in Britain, consisting of 17,000 route kilometres of fibre optic and copper cable which connected every major city and town in the country and provided links to continental Europe through the Channel Tunnel.
BR also operated its own national trunked radio network providing dedicated train-to-shore mobile communications, and in the early 1980s BR helped establish Mercury Communications’, now C&WC, core infrastructure by laying a resilient ‘figure-of-eight’ fibre optic network alongside Britain’s railway lines, spanning London, Bristol, Birmingham, Leeds and Manchester.
Regulation of communications has changed many times during the same period, and most of the bodies have been merged into Ofcom, the independent regulator and competition authority for the UK communications industries .
Domestic trunk infrastructure 
All communications trunks are now digital. Most are carried via national optical fibre networks. There are several companies with national fibre networks, including BT, Level 3 Communications, Virgin Media, Cable & Wireless, Easynet and Thus. Microwave links are used up to the 155 Mbit/s level, but are seldom cost-effective at higher bit rates.
International trunks 
The UK is a focal point for many of the world's submarine communications cables, which are now mostly digital optical fibre cables. There are many satellite links too, but these now provide a relatively small part of the international bandwidth.
Broadcast transmission 
Most broadcasting organisations, BBC and commercial, lease transmission facilities from one or more of the transmission companies. The main exception is the smaller local radio stations, some of which find it more cost-effective to provide their own.
Fixed phone lines 
BT is still the main provider of fixed telephones lines, both POTS and ISDN, and it has a universal service obligation, although companies can now contract Openreach to install a phoneline on their behalf, rather than telling the customer to get BT to install it, then transfer over.
Virgin Media is the second biggest player in the residential telephone line market.
Other companies provide fixed telephone lines too, but mainly to large companies in the major cities.
There are many other providers who sell fixed telephone services carried over BT lines. They have no network infrastructure of their own.
Mobile phone networks 
First generation networks 
- Cellnet was originally jointly owned by British Telecom and Securicor. BT eventually bought out Securicor's stake. The network became BT Cellnet and was then demerged to become O2.
Both companies ran ETACS analogue mobile phone networks.
First and second generation networks 
- O2 - runs a GSM-900 network, owned by Telefónica.
- Vodafone - runs a GSM-900 network.
- EE - runs a GSM-1800 network. Formerly this was two separate companies: Orange and T-Mobile, which was originally called One-2-One.
Third generation networks 
The four 2G companies all won 3G licences in a competitive auction, as did new entrant known as Hutchison 3G, which branded its network as 3. They have now rolled out their networks. Hutchinson 3G does not operate a 2G network, but has an agreement with Orange whereby customers who lose a 3G signal roam with Orange. They previously had an agreement with O2 to provide the same service.
The third generation stems from technological improvements and is in essence an improvement of the available bandwidth, enabling new services to be provided to customers. Such services include streaming of live radio or video, video calls and live TV.
Fourth generation networks 
Long-term evolution (LTE) services are currently being rolled out. EE launched their 4G network in September 2012, using part of their existing 1800 MHz spectrum. O2 and Vodafone will use the 800 MHz and 2600 MHz bands for their services, expected to launch in early 2013. 3 will provide LTE from September 2013 after it was allowed to use part of EE's 1800 MHz spectrum.
Fixed telephones 
In the UK, there were 35 million (2002) main line telephones.
The telephone service in the United Kingdom was originally provided by private companies and local city councils, but by 1912–13  all except the telephone service of Kingston upon Hull, Yorkshire and Guernsey had been bought out by the General Post Office. Post Office Telephones also operated telephone services in Jersey and the Isle of Man until 1969 when the islands took over responsibility for their own postal and telephone services.
Post Office Telephones was reorganised in 1980–81  as British Telecommunications (British Telecom, or BT), and was the first nationalised industry to be privatised by the Conservative government. The Hull Telephone Department was itself sold by Hull City Council as Kingston Communications in the late 1990s and celebrated its centenary in 2004.
Mobile telephones 
Each of the main network operators sells mobile phone services to the public. In addition, companies such as Virgin Mobile UK and Tesco Mobile act as mobile virtual network operators, using the infrastructure of other companies.
There is a set numbering plan for phone numbers within the United Kingdom, which is regulated by the Office of Communications (Ofcom), which replaced the Office of Telecommunications (Oftel) in 2003. Each number consists of an area code—one for each of the large towns and cities and their surroundings—and a subscriber number—the individual number.
Television and radio broadcasting 
As of 1998[update], there were 663 radio broadcast stations: 219 on AM, 431 on FM and 3 on shortwave. There were 84.5 million radio receiver sets (1997). Today there are around 600 licensed radio stations in the UK.
As of 1997[update], there were 30.5 million households with television sets.
Analogue television broadcasts ceased in the UK in 2012, replaced by the Digital Terrestrial Service Freeview which operates via the DVB-T and DVB-T2 (for HD broadcasts) standards. Digital Satellite is provided by BSkyB (subscription and free services) and Freesat (free to air services only) from services at 28.2° East. Digital cable is primarily provided by Virgin Media.
|This article is outdated. (November 2010)|
At the end of 2004, 52% of households (12.6 million) were reported to have access to the internet (Source: Office for National Statistics Omnibus Survey). broadband connections accounted for 50.7% of all internet connections in July 2005, with one broadband connection being created every ten seconds. Broadband connections grew by nearly 80% in 2004. In 1999, there were 364 Internet Service Providers (ISPs). Public libraries also provide access to the internet, sometimes for a fee.
See also 
- List of dialling codes in the United Kingdom
- List of postcode areas in the United Kingdom - (about 120)
- List of postcode districts in the United Kingdom - (about 2900)
- British telephone sockets
- BBC News (2 October 2012). "4G timetable agreed by UK mobile network operators".
- Events in Telecommunications History 1912 - BT Archives
- "Vodafone Sees Loss of UK Market Share and Lower ARPUs". Cellular-news.com. 2009-04-23. Retrieved 2012-08-28.
- "UK prefers broadband to dial-up". BBC News. 2005-07-19. Retrieved 2010-05-25.
- "Broadband in the UK gathers pace". BBC News. 2004-12-20. Retrieved 2010-05-25.