O2 (UK) (English Wikipedia)

"MMO2 offers small investor buyout". BBC News. 12 January 2005. Retrieved 15 September 2017.
"BT unveils new mobile brand". BBC News Online. 3 September 2001. Retrieved 7 February 2013.
"BT approves mobiles spin-off". BBC News Online. 23 October 2001. Retrieved 7 February 2013.
"Telefónica bids £18 billion for U.K.'s O2". BBC News. 31 October 2005. Retrieved 2 October 2010.
"Probably the best corporate slogan..." BBC News. 18 June 2006. Retrieved 2 October 2010.

bbc.com (Global: 20^th place; English: 30^th place)

"Virgin Media and O2 join forces to take on BT". BBC News. 7 May 2020. Retrieved 5 September 2020.
"O2 data network restored after outage". BBC News: Business. 7 December 2018. Retrieved 7 December 2018.

bettersociety.net (Global: low place; English: low place)

Evans, Mark (16 March 2020). "O2 and SSE launch supply chain renewable energy". Better Society. Retrieved 10 November 2025.

btplc.com (Global: low place; English: low place)

BT Cellnet – Our Commitment to Society and the Environment (PDF) (Report). BT Group. 2000. Archived from the original (PDF) on 27 October 2020. Retrieved 7 February 2011.

businessgreen.com (Global: low place; English: low place)

Murray, James (20 February 2009). "O2 first mobile firm to gain Carbon Trust Standard". BusinessGreen. Retrieved 2 October 2010.

campaignlive.co.uk (Global: 3,580^th place; English: 2,187^th place)

"O2 pushes brand and products in TV ad campaign". www.campaignlive.co.uk. Retrieved 18 December 2023.
"Campaign of the Year 2013: O2 'be more dog'". CampaignLive. 18 December 2013. Retrieved 16 August 2017.
Dar, Ian (10 February 2000). "BT Cellnet signs England team in £5m rugby deal". Campaign. Haymarket Media Group. Retrieved 2 December 2018.

cellmapper.net (Global: low place; English: low place)

CellMapper. "Cellular Tower and Signal Map". CellMapper. Retrieved 1 March 2022.

companieshouse.gov.uk (Global: 2,657^th place; English: 1,638^th place)

beta.companieshouse.gov.uk

"Telefonica Europe PLC". Companies House. Retrieved 10 May 2019.
"Telefonica Europe plc: Financial Statements". Companies House. 31 December 2017.

company-information.service.gov.uk (Global: 2,681^st place; English: 1,654^th place)

find-and-update.company-information.service.gov.uk

"TELEFONICA UK LIMITED overview - Find and update company information - GOV.UK".
"TELEFONICA UK LIMITED overview". Companies House. Retrieved 11 June 2025.

digitalspy.co.uk (Global: 277^th place; English: 196^th place)

Laughlin, Andrew (7 June 2012). "Vodafone and O2 to merge mobile network infrastructure". Digital Spy. Retrieved 1 August 2013.

ft.com (Global: 210^th place; English: 157^th place)

Parker, Andrew (28 September 2010). "Everything Everywhere disappoints analysts". Financial Times. Retrieved 2 October 2010.
Fildes, Nic (1 June 2021). "Newly merged Virgin Media O2 'ready to fire' at incumbent BT". Financial Times. Retrieved 1 June 2021.

ghostarchive.org (Global: 32^nd place; English: 21^st place)

Williams, Christopher (24 September 2016). "O2 fires up blockbuster London float plans". The Daily Telegraph. Archived from the original on 12 January 2022. Retrieved 25 September 2016.
Neate, Rupert (15 April 2010). "Slough accepts the call to be 4G mobile phone trailblazer". The Daily Telegraph. Archived from the original on 12 January 2022. Retrieved 2 October 2010.

gov.uk (Global: 432^nd place; English: 278^th place)

Competition and Markets Authority case, UK government official website, 4 December 2015. Retrieved: 30 December 2015.
Competition – press release: CMA requests UK review of O2/Three merger, UK government official website, 2 October 2015. Retrieved: 30 December 2015.

independent.co.uk (Global: 36^th place; English: 33^rd place)

McIntosh, Bill (11 September 1999). "Secret deal charge dogs sale of Securicor's Cellnet stake to BT". The Independent. Retrieved 2 October 2010.

jknowles.com (Global: low place; English: low place)

"Jonathan Knowles Photography - advertising photographer - still life liquid drinks people". Archived from the original on 8 October 2011. Retrieved 8 December 2014.

marketingmagazine.co.uk (Global: low place; English: 9,744^th place)

Billings, Claire (24 April 2002). "O2 readies for £130m May Day rebranding push across Europe". Marketing. Retrieved 2 October 2010.

marketingweek.com (Global: low place; English: 8,228^th place)

Gee, Rachel (25 October 2016). "O2 on how it has turned its customers into rugby fans". Marketing Week. Retrieved 2 December 2018.

mastdatabase.co.uk (Global: low place; English: low place)

"UK mobile spectrum allocation". mastdatabase.co.uk. Retrieved 27 January 2024.

mobilenewscwp.co.uk (Global: low place; English: low place)

"O2: NFC is ready to launch". Mobile News. 15 July 2009. Archived from the original on 18 July 2009. Retrieved 14 May 2010.
"O2 aims to be UK's first carbon-neutral operator by 2025 – Mobile News". Mobile News. 3 March 2020. Retrieved 10 November 2025.

musicweek.com (Global: 2,278^th place; English: 1,337^th place)

"O2, Live Nation and Academy Music Group renew alliance for O2 Academy venues". Music Week. 24 July 2017. Retrieved 23 February 2018.

nationalarchives.gov.uk (Global: 744^th place; English: 547^th place)

webarchive.nationalarchives.gov.uk

"Completed acquisition by British Sky Broadcasting Limited of Be Unlimited". Office of Fair Trading. National Archives. Archived from the original on 2 April 2014. Retrieved 14 October 2014.

nearfieldcommunicationsworld.com (Global: low place; English: low place)

"Telefónica launches O2 Money, says it is ready to deploy NFC". NFC World. 28 July 2009. Retrieved 2 October 2010.

o2.co.uk (Global: low place; English: low place)

o2.co.uk

"Virgin Media and O2 Partnership". www.o2.co.uk. Retrieved 1 June 2021.
"O2 | Terms and Conditions | Privacy Policy". www.o2.co.uk. Retrieved 1 June 2021.
"Wifi and 4G Calling". www.o2.co.uk. Retrieved 28 March 2017.

news.o2.co.uk

Contact us, O₂ corporate website Archived 15 August 2017 at the Wayback Machine. Retrieved: 6 December 2012.
"O2 unveils its new brand campaign: 'More for you'". O2. 2 June 2016. Retrieved 16 June 2018.

blog.o2.co.uk

"O2's Official Blog". Blog.o2.co.uk. 28 June 2011. Retrieved 20 September 2013.
"Introducing the Mobile Wallet" (Press release). O2. 1 September 2011. Retrieved 14 September 2011.

o2.com (Global: low place; English: low place)

"O2 enters U.K. broadband market with purchase of Be". O2 plc. Retrieved 22 April 2010.

ofcom.org.uk (Global: 4,546^th place; English: 2,560^th place)

consumers.ofcom.org.uk

"Ofcom announces winners of the 4G mobile auction". Ofcom. 20 February 2013. Archived from the original on 5 September 2013. Retrieved 20 February 2013.
"Ofcom announces winners of the 4G mobile auction". Ofcom. 20 February 2013. Archived from the original on 5 September 2013. Retrieved 24 February 2014.

oft.gov.uk (Global: low place; English: low place)

"Completed acquisition by British Sky Broadcasting Limited of Be Unlimited". Office of Fair Trading. National Archives. Archived from the original on 2 April 2014. Retrieved 14 October 2014.

reuters.com (Global: 49^th place; English: 47^th place)

reuters.com

Hutchison to buy Telefonica UK unit for $15.4 billion. Reuters, 23 January 2015

uk.reuters.com

Prodhan, Georgina (2 September 2008). "O2 finds mobile payments popular". Reuters. Archived from the original on 26 March 2010. Retrieved 2 October 2010.

salford.ac.uk (Global: low place; English: 9,316^th place)

cntr.salford.ac.uk

"Analogue Mobiles - 1G". cntr.salford.ac.uk. Retrieved 11 June 2025.

sourcewire.com (Global: low place; English: low place)

Linton, Peter (18 June 2001). "Cellnet and One2One Founder Adds Voice to Speech Recognition Company". Medialink. Retrieved 2 October 2010.

telefonica.com (Global: low place; English: low place)

"Telefónica 2017 Integrated Annual Report, Key Figures". Telefónica. 2017.

telegraph.co.uk (Global: 30^th place; English: 24^th place)

Williams, Christopher (24 September 2016). "O2 fires up blockbuster London float plans". The Daily Telegraph. Archived from the original on 12 January 2022. Retrieved 25 September 2016.
Neate, Rupert (15 April 2010). "Slough accepts the call to be 4G mobile phone trailblazer". The Daily Telegraph. Archived from the original on 12 January 2022. Retrieved 2 October 2010.

thedrum.com (Global: 5,929^th place; English: 3,383^rd place)

"O2 chooses shopworker Shannon Ryan for first boxing sponsorship". The Drum. Retrieved 14 July 2025.

theguardian.com (Global: 12^th place; English: 11^th place)

Sweney, Mark (7 May 2020). "Virgin Media and O2 owners confirm £31bn mega-merger in UK". The Guardian. ISSN 0261-3077. Retrieved 5 September 2020.
Halliday, Josh (12 July 2012). "O2 apologises over 'embarrassing' network problems". The Guardian. Retrieved 14 July 2012.
Sweney, Mark (6 November 2008). "O2 to sponsor Academy music venues". The Guardian. Retrieved 23 February 2018.
Carrington, Damian (27 September 2009). "10:10 climate campaign gathers momentum". The Guardian. Retrieved 2 October 2010.

theregister.co.uk (Global: 1,216^th place; English: 797^th place)

Richardson, Tim (31 October 2005). "Spain's Telefonica to buy O₂". The Register. Retrieved 7 February 2011.

totaltele.com (Global: low place; English: low place)

Wood, Nick (15 December 2009). "O2 in UK LTE trial". Total Telecom. Retrieved 2 October 2010.
"O2 pledges carbon neutrality by 2025 | Total Telecom". totaltele.com. Retrieved 10 November 2025.

virginmedia.com (Global: 6,051^st place; English: 3,586^th place)

"Virgin Media and O2 Partnership News". Virgin Media. Retrieved 1 June 2021.

virginmediao2.co.uk (Global: low place; English: low place)

news.virginmediao2.co.uk

"Q4 2024 Earnings Release" (PDF). news.virginmediao2.co.uk. 19 February 2025. Retrieved 19 February 2025.
Howard, Holly (28 March 2025). "Essential for Living: O2 revisits founding ethos for new brand platform". Virgin Media O2. Retrieved 2 August 2025.

web.archive.org (Global: 1^st place; English: 1^st place)

Contact us, O₂ corporate website Archived 15 August 2017 at the Wayback Machine. Retrieved: 6 December 2012.
BT Cellnet – Our Commitment to Society and the Environment (PDF) (Report). BT Group. 2000. Archived from the original (PDF) on 27 October 2020. Retrieved 7 February 2011.
"Ofcom announces winners of the 4G mobile auction". Ofcom. 20 February 2013. Archived from the original on 5 September 2013. Retrieved 20 February 2013.
"Ofcom announces winners of the 4G mobile auction". Ofcom. 20 February 2013. Archived from the original on 5 September 2013. Retrieved 24 February 2014.
Prodhan, Georgina (2 September 2008). "O2 finds mobile payments popular". Reuters. Archived from the original on 26 March 2010. Retrieved 2 October 2010.
"O2: NFC is ready to launch". Mobile News. 15 July 2009. Archived from the original on 18 July 2009. Retrieved 14 May 2010.
"Jonathan Knowles Photography - advertising photographer - still life liquid drinks people". Archived from the original on 8 October 2011. Retrieved 8 December 2014.

worldcat.org (Global: 5^th place; English: 5^th place)

search.worldcat.org

Sweney, Mark (7 May 2020). "Virgin Media and O2 owners confirm £31bn mega-merger in UK". The Guardian. ISSN 0261-3077. Retrieved 5 September 2020.

O2 (UK) (English Wikipedia)

bbc.co.uk (Global: 8th place; English: 10th place)

bbc.co.uk

news.bbc.co.uk

bbc.com (Global: 20th place; English: 30th place)

bettersociety.net (Global: low place; English: low place)

btplc.com (Global: low place; English: low place)

businessgreen.com (Global: low place; English: low place)

campaignlive.co.uk (Global: 3,580th place; English: 2,187th place)

cellmapper.net (Global: low place; English: low place)

companieshouse.gov.uk (Global: 2,657th place; English: 1,638th place)

beta.companieshouse.gov.uk

company-information.service.gov.uk (Global: 2,681st place; English: 1,654th place)

find-and-update.company-information.service.gov.uk

digitalspy.co.uk (Global: 277th place; English: 196th place)

ft.com (Global: 210th place; English: 157th place)

ghostarchive.org (Global: 32nd place; English: 21st place)

gov.uk (Global: 432nd place; English: 278th place)

independent.co.uk (Global: 36th place; English: 33rd place)

jknowles.com (Global: low place; English: low place)

marketingmagazine.co.uk (Global: low place; English: 9,744th place)

marketingweek.com (Global: low place; English: 8,228th place)

mastdatabase.co.uk (Global: low place; English: low place)

mobilenewscwp.co.uk (Global: low place; English: low place)

musicweek.com (Global: 2,278th place; English: 1,337th place)

nationalarchives.gov.uk (Global: 744th place; English: 547th place)

webarchive.nationalarchives.gov.uk

nearfieldcommunicationsworld.com (Global: low place; English: low place)

o2.co.uk (Global: low place; English: low place)

o2.co.uk

news.o2.co.uk

blog.o2.co.uk

o2.com (Global: low place; English: low place)

ofcom.org.uk (Global: 4,546th place; English: 2,560th place)

consumers.ofcom.org.uk

oft.gov.uk (Global: low place; English: low place)

reuters.com (Global: 49th place; English: 47th place)

reuters.com

uk.reuters.com

salford.ac.uk (Global: low place; English: 9,316th place)

cntr.salford.ac.uk

sourcewire.com (Global: low place; English: low place)

telefonica.com (Global: low place; English: low place)

telegraph.co.uk (Global: 30th place; English: 24th place)

thedrum.com (Global: 5,929th place; English: 3,383rd place)

theguardian.com (Global: 12th place; English: 11th place)

theregister.co.uk (Global: 1,216th place; English: 797th place)

totaltele.com (Global: low place; English: low place)

virginmedia.com (Global: 6,051st place; English: 3,586th place)

virginmediao2.co.uk (Global: low place; English: low place)

news.virginmediao2.co.uk

web.archive.org (Global: 1st place; English: 1st place)

worldcat.org (Global: 5th place; English: 5th place)

search.worldcat.org

bbc.co.uk (Global: 8^th place; English: 10^th place)

bbc.com (Global: 20^th place; English: 30^th place)

campaignlive.co.uk (Global: 3,580^th place; English: 2,187^th place)

companieshouse.gov.uk (Global: 2,657^th place; English: 1,638^th place)

company-information.service.gov.uk (Global: 2,681^st place; English: 1,654^th place)

digitalspy.co.uk (Global: 277^th place; English: 196^th place)

ft.com (Global: 210^th place; English: 157^th place)

ghostarchive.org (Global: 32^nd place; English: 21^st place)

gov.uk (Global: 432^nd place; English: 278^th place)

independent.co.uk (Global: 36^th place; English: 33^rd place)

marketingmagazine.co.uk (Global: low place; English: 9,744^th place)

marketingweek.com (Global: low place; English: 8,228^th place)

musicweek.com (Global: 2,278^th place; English: 1,337^th place)

nationalarchives.gov.uk (Global: 744^th place; English: 547^th place)

ofcom.org.uk (Global: 4,546^th place; English: 2,560^th place)

reuters.com (Global: 49^th place; English: 47^th place)

salford.ac.uk (Global: low place; English: 9,316^th place)

telegraph.co.uk (Global: 30^th place; English: 24^th place)

thedrum.com (Global: 5,929^th place; English: 3,383^rd place)

theguardian.com (Global: 12^th place; English: 11^th place)

theregister.co.uk (Global: 1,216^th place; English: 797^th place)

virginmedia.com (Global: 6,051^st place; English: 3,586^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

worldcat.org (Global: 5^th place; English: 5^th place)