BT Group in the context of "Virgin TV"

A postal, telegraph, and telephone service (or PTT) is a government agency responsible for postal mail, telegraph, and telephone services. Such monopolies existed in many countries, though not in North America, post-war Japan or Spain. Many PTTs have been partially or completely privatised in recent years, though a few, such as Posta ve Telgraf Teşkilatı of Turkey, Myanma Posts and Telecommunications of Myanmar and Tusass of Greenland, continue to remain wholly government-owned. In many of said privatisations, the privatised corporation was completely renamed, such as KPN in the Netherlands, Orange S.A. in France (+ Orange Polska in Poland), BT Group in the United Kingdom, Eir in the Republic of Ireland, Swisscom in Switzerland, Telstra in Australia, Spark in New Zealand, Proximus Group in Belgium, A1 Telekom Austria Group in Austria, TDC Group in Denmark, Telia Company in Sweden and Finland, Telenor in Norway, Chunghwa Telecom in Taiwan and Singtel in Singapore; whereas in others, the name of the privatised corporation has been only slightly modified, such as Telkom Indonesia in Indonesia, Telekom Malaysia in Malaysia, Deutsche Telekom in Germany (+ Hrvatski Telekom in Croatia and Telekom Romania Mobile in Romania), Kosovo Telecom in Kosovo, KT in South Korea, Post Luxembourg in Luxembourg and Síminn in Iceland.

The Premier League is a professional association football league in England and the highest level of the English football league system. Contested by 20 clubs, it operates on a system of promotion and relegation with the English Football League (EFL). Seasons usually run from August to May, with each team playing 38 matches: two against each other team, one home and one away. Most games are played on weekend afternoons, with occasional weekday evening fixtures.

The competition was founded as the FA Premier League on 20 February 1992, following the decision of clubs from the First Division (the top tier since 1888) to break away from the English Football League. Teams are still promoted and relegated to and from the EFL Championship each season. The Premier League is a corporation managed by a chief executive, with member clubs as shareholders. The Premier League takes advantage of a £5 billion domestic television rights deal, with Sky and BT Group broadcasting 128 and 32 games, respectively. This will rise to £6.7 billion from 2025 to 2029. In the 2022–2025 cycle, the Premier League earned a record £5.6 billion from international rights. As of 2023–24, Premier League clubs received central payments totalling £2.8 billion, with additional solidarity payments made to relegated EFL clubs.

O2 (typeset as O₂) is a British brand owned by Spanish telecommunications company Telefónica, used for its subsidiaries in the United Kingdom and Germany, its former subsidiaries in the Czech Republic and Slovakia, and since 2018 as an online-only flanker brand in Spain. The O2 brand was created by British Telecom (BT) in 2001 ahead of the demerger of its global BT Wireless division as mmO2 plc (later O2 plc).

BT Wireless provided telecommunications services in the United Kingdom (BT Cellnet), Ireland (Digifone), Germany (VIAG Interkom), the Netherlands (Telfort), the Isle of Man (Manx Telecom), and a global mobile data business known as Genie Internet. Most of these operations were rebranded as O2 following the demerger from BT. In 2006, O2 plc was acquired by Telefónica, becoming Telefónica Europe. As part of a reorganisation of Telefónica in 2014, Telefónica Europe's holdings and operations became direct subsidiaries of its parent: Telefónica S.A.

Cable & Wireless plc was a British telecommunications company. In the mid-1980s, it became the first company in the UK to offer an alternative telephone service to British Telecom (via subsidiary Mercury Communications). The company later offered cable TV to its customers, but it sold its cable assets to NTL (now Virgin Media) in 2000. It remained a significant player in the UK telecoms market and in certain overseas markets, especially in the former British colonies of the Caribbean, where it was formerly the monopoly incumbent. It was also the main supplier of communication in the British South Atlantic, including Saint Helena and the Falkland Islands. It was listed on the London Stock Exchange and was a constituent of the FTSE 100 Index.

The company split in March 2010, with its international division demerging to form Cable & Wireless Communications, acquired by Liberty Global in 2015, and since spun-off in 2018 from Liberty Global to Liberty Latin America, while the remainder of the Cable & Wireless business became Cable & Wireless Worldwide and was acquired by Vodafone in 2012.

The General Post Office (GPO) was the state postal system and telecommunications carrier of the United Kingdom until 1969. Established in England in the 17th century, the GPO was a state monopoly covering the dispatch of items from a specific sender to a specific receiver (which was to be of great importance when new forms of communication were invented); it was overseen by a Government minister, the Postmaster General. Over time its remit was extended to Scotland and Ireland, and across parts of the British Empire.

The GPO was abolished by the Post Office Act 1969, which transferred its assets to the Post Office, so changing it from a Department of State to a statutory corporation. Responsibility for telecommunications was given to Post Office Telecommunications, the successor of the GPO Telegraph and Telephones department. In 1980, the telecommunications and postal sides were split prior to British Telecommunications' conversion into a totally separate publicly owned corporation the following year as a result of the British Telecommunications Act 1981. In 1986 the Post Office Counters business was made functionally separate from Royal Mail Letters and Royal Mail Parcels (the latter being later rebranded as 'Parcelforce'). At the start of the 21st century the Post Office became a public limited company (initially called 'Consignia plc'), which was renamed 'Royal Mail Group plc' in 2002. In 2012 the counters business (known as 'Post Office Limited' since 2002) was taken out of Royal Mail Group, prior to the latter's privatisation in 2013. The privatised holding company (Royal Mail plc) was renamed International Distributions Services plc in 2022.