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Hutchison 3G UK Limited, trading as Three UK, is a British
telecommunications Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electronic means, typically through cables, radio waves, or other communication technologies. These means of ...
company based in
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, England. It is a wholly-owned subsidiary of
VodafoneThree VodafoneThree Holdings Limited, trading as VodafoneThree, is a British telecommunications company. It was formed on 31 May 2025 as a joint venture between Vodafone (51%) and CK Hutchison (49%) through the merger of their respective Vodafone UK ...
, a joint venture between
Vodafone Vodafone Group Public Limited Company () is a British Multinational company, multinational telecommunications company. Its registered office and global headquarters are in Newbury, Berkshire, England. It predominantly operates Service (economic ...
(51%) and
CK Hutchison Holdings CK Hutchison Holdings Limited () is a Hong Kong–based and Cayman Islands–registered multinational conglomerate corporation. The company was formed in March 2015 through the merger of Cheung Kong Holdings and its main associate company Hutc ...
(49%). Three is part of the largest mobile network operator in the United Kingdom, with about 10.9million subscribers . The company was launched on 3 March 2003 as the UK's first commercial 100% 3G network. It provides 3G, 4G and 5G services through its own network infrastructure. In June 2023, it was proposed that Three would merge with
Vodafone UK Vodafone Limited, trading as Vodafone UK (stylised as vodafone), is a British telecommunications company, owned since May 2025 by VodafoneThree, a joint venture between Vodafone Group (51%) and Three owner CK Hutchison Holdings (49%). The ...
. The merger was approved by the
Competition and Markets Authority The Competition and Markets Authority (CMA) is the principal competition regulator in the United Kingdom. It is a non-ministerial government department in the United Kingdom, responsible for promoting competitive markets and tackling unfair beh ...
in December 2024 and completed in June 2025.


History

The Three mobile service was launched in the UK on 3 March 2003, with handsets going on sale later that year. Three was the UK's first commercial video mobile (3G) network. Three was the first network to meet its regulatory requirement of 80% population coverage in the UK, meeting this by 9 December 2004. Three's first retail shops, called 3Store, opened at the same time as the network launched, on
Oxford Street Oxford Street is a major road in the City of Westminster in the West End of London, running between Marble Arch and Tottenham Court Road via Oxford Circus. It marks the notional boundary between the areas of Fitzrovia and Marylebone to t ...
and
Kensington High Street Kensington High Street is the main shopping street in Kensington, London, England. The area is identified in the London Plan as one of 35 major centres in Greater London. Kensington High Street is the continuation of Kensington Road and part ...
, both in London, and at the
Birmingham Birmingham ( ) is a City status in the United Kingdom, city and metropolitan borough in the metropolitan county of West Midlands (county), West Midlands, within the wider West Midlands (region), West Midlands region, in England. It is the Lis ...
Mailbox. Three also sold handsets, devices and contracts through independent and online retailers at the time. In 2005, Three expanded, and stores opened in larger shopping centres throughout the UK. On 24 October 2006, Three announced that it had purchased 95 high street shops from O2 and The Link. Three launched SeeMeTV, allowing its customers to submit their own video content that other subscribers could watch. Users would make a small
micropayment A micropayment is a financial transaction involving a very small sum of money and usually one that occurs online. A number of micropayment systems were proposed and developed in the mid-to-late 1990s, all of which were ultimately unsuccessful. A s ...
(the price decided by the video's creator) to watch these videos. The user who created the videos would get paid 10% of the amount of money paid by other users to watch the video. Users were paid once they had accrued £10. In 2010, Three became the fourth network in the UK to launch the
iPhone 4 The iPhone 4 is a smartphone that was developed and marketed by Apple Inc. It is the List of iPhone models, fourth generation of the iPhone lineup, succeeding the iPhone 3GS and preceding the iPhone 4s. Following a number of notable leaks, ...
after O2, Orange and Vodafone. In July 2014, Three introduced the 3 inTouch app, allowing customers to place calls through a
Wi-Fi Wi-Fi () is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for Wireless LAN, local area networking of devices and Internet access, allowing nearby digital devices to exchange data by ...
connection. Three customers can also access the Virgin
Wi-Fi Wi-Fi () is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for Wireless LAN, local area networking of devices and Internet access, allowing nearby digital devices to exchange data by ...
network implemented at over 130
London Underground The London Underground (also known simply as the Underground or as the Tube) is a rapid transit system serving Greater London and some parts of the adjacent home counties of Buckinghamshire, Essex and Hertfordshire in England. The Undergro ...
stations. On 24 March 2015, Three's parent company Hutchison Whampoa announced it intended to acquire the UK operations of rival mobile network O2 for £10.25billion, subject to regulatory approval. On 11 May 2016, EU commission blocked the deal on the grounds that it would affect competition in the UK market. In November 2016, three men were arrested after a data breach at the Three mobile network allowed fraudsters to access personal data and steal phones. The company said that while names and addresses were accessed, some financial information might be compromised. Fraudsters were understood to have used authorised login information to order upgraded phones, including iPhone and Samsung handsets, to be sent to customers before intercepting them. Three, which had 9million customers, said it believed around 400 phones had been stolen. In early 2020, CEO of Three UK, Dave Dyson, resigned after nine years at the helm. He was replaced by
Three Ireland Three Ireland (Hutchison) Limited (formerly Hutchison 3G Ireland Limited), commonly known as 3 Ireland or Three Ireland, is a telecommunications and Internet service provider operating in Ireland as a subsidiary of CK Hutchison Holdings, oper ...
's CEO, Robert Finnegan, who now manages both companies. Three was the main shirt sponsor of
Premier League 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 Lea ...
club Chelsea since the 2020–21 season. On 10 March 2022 Three announced it was ending its sponsorship deal with Chelsea immediately, and asked the club to remove the company's logo from its kits.


Network

In order to provide coverage parity with other networks in the UK, Three maintained for a time a national roaming agreement with an established 2G network operator. O2 operated this service for Three customers at first, until
Orange Orange most often refers to: *Orange (fruit), the fruit of the tree species '' Citrus'' × ''sinensis'' ** Orange blossom, its fragrant flower ** Orange juice *Orange (colour), the color of an orange fruit, occurs between red and yellow in the vi ...
was selected as the new national roaming partner from May 2006. In the early period of the 3G network, Orange 2G (acquired by EE in 2010) was adopted in areas as a fallback where 3G wasn't available. In 2010, this fallback coverage began to be removed, meaning older phones that supported only 2G lost access to the Three network. From 2013, Three no longer provided a significant 2G fallback for most of the United Kingdom. In December 2007,
T-Mobile T-Mobile is the brand of telecommunications by Deutsche Telekom Deutsche Telekom AG (, ; often just Telekom, DTAG or DT; stylised as ·T·) is a partially state-owned German telecommunications company headquartered in Bonn and the largest telec ...
and Three launched a 50:50 joint venture called Mobile Broadband Network Limited (MBNL) which aimed to combine both of their 3G networks and provide almost-complete 3G population coverage by the end of 2008. In November 2010, MBNL announced that the network had reached a total of 12,000 combined sites. In 2022, Three announced its intention to decommission its 3G network by the end of 2024. A study in October 2024 found that Three's decision to switch off its 3G network improved overall data speeds but reduced network coverage in some areas.


4G

Three began a limited rollout of
4G LTE In telecommunications, long-term evolution (LTE) is a standard for wireless broadband communication for cellular mobile devices and data terminals. It is considered to be a "transitional" 4G technology, and is therefore also referred to as 3 ...
services in December 2013 in London,
Birmingham Birmingham ( ) is a City status in the United Kingdom, city and metropolitan borough in the metropolitan county of West Midlands (county), West Midlands, within the wider West Midlands (region), West Midlands region, in England. It is the Lis ...
,
Manchester Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...
and
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, expanding to over a further 450 locations by the end of 2014. In August 2012, Three was given permission to use part of the 1,800 
MHz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), often described as being equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose formal expression in terms of SI base u ...
spectrum used by EE's 4G network. In February 2013, Ofcom announced that Three had been awarded 2 x 5 MHz (10 MHz) of 800 MHz to use for 4G. Three planned to launch 4G in the second quarter of 2013 but it delayed the rollout until Q4, saying that it wanted to analyse the performance of other networks' 4G coverage first. The network provides LTE and DC-HSDPA service as a standard feature to all its subscribers using "Ultrafast" to describe both technologies, making it (at the time) the cheapest price for 4G and the only unlimited 4G in the UK. In April 2015, Three announced that
VoLTE Voice over Long-Term Evolution (acronym VoLTE) is an LTE high-speed wireless communication standard for voice calls and SMS using mobile phones and data terminals. VoLTE has up to three times more voice and data capacity than older 3G UMTS an ...
would be rolled out along with 800 MHz spectrum from September.


Network upgrades

In November 2018, Three UK announced a £2billion investment programme to support the rollout of 5G across its network. This included the acquisition of spectrum for 5G by buying Relish Broadband to gain 40Mhz of spectrum across the 3.4GHz, 3.6GHz and 3.9GHz bands. Furthermore, it involved the creation of a
dark fibre A dark fibre or unlit fibre is an unused optical fibre, available for use in fibre-optic communication. Dark fibre may be leased from a network service provider. Dark fibre originally referred to the potential network capacity of telecommunic ...
network to connect 20 new data centres, alongside deploying carrier aggregation across 2,500 sites, improving performance on 4G.


Roaming at domestic prices

Until 2009, Three subscribers in the UK, Ireland, Austria, Italy, Denmark, Sweden, Hong Kong and Australia could use their service on Three networks around the world for no extra charge with "3 Like Home". The service was relaunched on 30 August 2013 as "Feel At Home" for UK customers visiting Australia, Austria, Denmark, Hong Kong, Ireland, Italy and Sweden, where calls, texts and data could be consumed without roaming charges; meaning they cost the same as for communication within the UK. Additional countries were subsequently added to "Feel At Home" including Finland, France, Indonesia, Israel, Macau, New Zealand, Norway, Spain, Sri Lanka, Switzerland and the United States. The service was expanded to a further 24 European countries in September 2016. Three changed the name of its roaming proposition from "Feel at Home" to "Go Roam", which now covers 59 countries and territories since 2017. Three advertises that the service covers "71 destinations" because it counts several countries more than once. For example, Three counts "Ireland" and "
Republic of Ireland Ireland ( ), also known as the Republic of Ireland (), is a country in Northwestern Europe, north-western Europe consisting of 26 of the 32 Counties of Ireland, counties of the island of Ireland, with a population of about 5.4 million. ...
" as two destinations, counts
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in addition to Finland, counts two parts of Spain in addition to Spain, counts two parts of Portugal in addition to Portugal, and counts eight parts of France in addition to France. "Go Roam" only covers roaming, and does not include non-roaming services such as international calls made from the UK. Three UK changed its terms and conditions in September 2021. Customers acquiring new contracts or updates after that date will no longer have "Go Roam" free of charge. This benefit costs £2 per day for roaming in EU countries (except Ireland) and £5 per day when roaming outside the EU.


Frequency allocations


Virtual operators

The Three network is used by a number of
mobile virtual network operator A mobile virtual network operator (MVNO) is a wireless communications services provider that does not own the wireless network infrastructure over which it provides services to its customers. An MVNO enters into a business agreement with a mobil ...
s (MVNOs). In May 2015,
Currys plc Currys plc is a British multinational electrical and telecommunications retailer, and services company headquartered in London, England, which was formed in 2014 by the merger of Dixons Retail and Carphone Warehouse Group. It is listed on the ...
launched its
iD Mobile iD Mobile is a British mobile virtual network operator (MVNO) operating as iD Mobile Limited, using the VodafoneThree network. The company is a wholly owned subsidiary of Currys plc, and its services were launched on 12 May 2015. Until April ...
network. In August 2017, Three UK launched its SMARTY network. In June 2018, Three UK and its sister company,
Superdrug Superdrug Stores plc (trading as Superdrug) is a health and beauty retailer in the United Kingdom, and the second largest behind Boots UK. The company is owned by AS Watson (Health & Beauty UK) Limited which is part of the A.S. Watson Group. ...
, launched its Superdrug Mobile network.


Merger with Vodafone

In 2015, Three UK proposed a £10.2bn merger with
O2 UK Telefonica UK Limited, trading as O2 UK (stylised as O2), is a British List of telephone operating companies#United Kingdom, telecommunications services provider. It is the List of mobile network operators of Europe#United Kingdom, largest mobi ...
, which would have reduced the number of UK networks from four to three. The deal would involve O2 owner Telefonica selling O2 UK to CK Hutchson (Three UK's owner) for £10.2bn, and would have created the largest mobile network at the time. However, the plan was blocked by the
European Commission The European Commission (EC) is the primary Executive (government), executive arm of the European Union (EU). It operates as a cabinet government, with a number of European Commissioner, members of the Commission (directorial system, informall ...
as it was expected to drive up prices and reduce competition. In 2023,
Vodafone UK Vodafone Limited, trading as Vodafone UK (stylised as vodafone), is a British telecommunications company, owned since May 2025 by VodafoneThree, a joint venture between Vodafone Group (51%) and Three owner CK Hutchison Holdings (49%). The ...
struck a deal with Three UK to merge their UK businesses, subject to approval by the competition regulator. The combined company would have 27million customers, which would make them the largest mobile network in the UK, surpassing O2's 24million and EE's 20million. The deal would give
Vodafone Group Vodafone Group Public Limited Company () is a British multinational telecommunications company. Its registered office and global headquarters are in Newbury, Berkshire, England. It predominantly operates services in Asia, Africa, Europe, and ...
a 51% stake in the new business, with CK Hutchison owning the remaining 49%. Consumer group
Which? ''Which?'' is a United Kingdom brand name that promotes informed consumer choice in the purchase of goods and services by testing products, highlighting inferior products or services, raising awareness of consumer rights, and offering indepen ...
raised concerns that the merger risked lowering the quality of service and increasing prices due to reduced competition. In March 2024, the
Competition and Markets Authority The Competition and Markets Authority (CMA) is the principal competition regulator in the United Kingdom. It is a non-ministerial government department in the United Kingdom, responsible for promoting competitive markets and tackling unfair beh ...
(CMA) decided the merger could lead to a substantial lessening of competition in the United Kingdom, and it was therefore referring the merger to a more detailed 'phase 2' investigation. In December 2024, the CMA approved the merger, subject to conditions aimed at protecting consumers. These include commitments to invest £11bn in 5G infrastructure, cap some mobile tariffs, and maintain fixed contract terms for mobile virtual network operators for three years. The CMA and
Ofcom The Office of Communications, commonly known as Ofcom, is the government-approved regulatory and competition authority for the broadcasting, internet, telecommunications and mail, postal industries of the United Kingdom. Ofcom has wide-rang ...
will monitor compliance with these conditions. The deal included an option for Vodafone to buy Hutchison's 49% stake after three years, and ''The Times'' reported that Vodafone was expected to exercise the option because Hutchison's
Li Ka-shing Sir Ka-shing Li (; born 29 July 1928) is a Hong Kong billionaire business magnate, investor, and philanthropist. He is the senior advisor for CK Hutchison Holdings and CK Asset Holdings, after he retired from the Chairman of the Board in May ...
had stated he did not intend to invest further in the UK. The merger completed in June 2025, with the new company planning to invest £11 billion in UK infrastructure over the next decade.


SMARTY

In August 2017, Three launched a
no frills A no-frills or no frills service or product is one for which the non-essential features have been removed to keep the price low. The term "Ruffle (sewing), frills" originally refers to a style of fabric decoration. Something offered to customers f ...
SIM-only brand called SMARTY to compete against O2's giffgaff and
Vodafone Vodafone Group Public Limited Company () is a British Multinational company, multinational telecommunications company. Its registered office and global headquarters are in Newbury, Berkshire, England. It predominantly operates Service (economic ...
's VOXI. Unlike Three, which offers telephone support, SMARTY instead opted to only offer live chat, community forums and help pages; the live chat service is provided by Three UK customer support teams. Instead of fixing customers into a contract, SMARTY offers a rolling 30-day contract, allowing customers to cancel at any time. They offer free EU roaming and MMS. Furthermore, SMARTY does not complete credit checks, making it an option for people with a poor
credit score A credit score is a numerical expression based on a level analysis of a person's credit files, to represent the creditworthiness of an individual. A credit score is primarily based on a credit report, information typically sourced from credit bu ...
. Unlike Three,
eSIM An eSIM (embedded SIM) is a form of SIM card that is embedded directly into a device as software installed onto a eUICC chip. First released in March 2016, eSIM is a global specification by the GSMA that enables remote SIM provisioning; end ...
is not supported on SMARTY. From 2019 to 2024, SMARTY won a number of Best PAYG Network and Best Value SIM Only awards from comparison service
uSwitch Uswitch Limited is a UK-based price comparison service and switching website founded in 2000. Users can conveniently compare prices across various sectors of energy, personal finance, insurance, and communications History uSwitch.com was fo ...
.


Awards

In 2010, Three was voted Best Network for Mobile Broadband in a YouGov survey for the second year in a row. In 2018, Three was awarded Best Network for Roaming and Most Popular Mobile Network at the uSwitch Broadband and Mobile Awards 2018. In 2019, Three was awarded Best Network for Roaming at the uSwitch Broadband and Mobile Awards 2019. In 2020, Three was awarded Best Network for Roaming and Most Popular Mobile Network at the uSwitch Broadband and Mobile Awards 2020. From 2021 to 2024, Three has won four of the six-monthly Speedtest Award for the Fastest 5G Mobile Network. In 2021, Three was awarded Best Network for Data, Best Network for Roaming, Best SIM Only Network, and Most Popular Mobile Network at the uSwitch Broadband and Mobile Awards. In 2023, Three was awarded Best Network for Business at the Mobile Industry Awards.


References


External links

* {{Authority control UK British banned television advertisements British subsidiaries of foreign companies Telecommunications companies established in 2003 Mobile phone companies of the United Kingdom British companies established in 2003 2025 mergers and acquisitions