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. 3 September 2001. Retrieved 7 February 2013.
"BT approves mobiles spin-off". BBC News. 23 October 2001. Retrieved 7 February 2013.
"Telefónica bids £18 billion for UK'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: 26^th place; English: 23^rd 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: 5,186^th place; English: 2,756^th place)

Billings, Claire (24 April 2002). "O2 readies for £130m May Day rebranding push across Europe". Marketing (merged with Campaign). Retrieved 26 May 2026.
Chandiramani, Ravi. "O2 pushes brand and products in TV ad campaign". Campaign. Retrieved 26 May 2026.
"Campaign of the Year 2013: O2 'be more dog'". Campaign. 18 December 2013. Retrieved 26 May 2026.
Dar, Ian (10 February 2000). "BT Cellnet signs England team in £5m rugby deal". Campaign. Retrieved 2 December 2018.

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

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

companieshouse.gov.uk (Global: 3,815^th place; English: 2,179^th place)

beta.companieshouse.gov.uk

"Telefonica Europe plc: Financial Statements". Companies House. 31 December 2017.

company-information.service.gov.uk (Global: 1,947^th place; English: 1,052^nd place)

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

"Telefonica UK Limited overview". Companies House.

digitalspy.co.uk (Global: 441^st place; English: 237^th place)

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

englandrugby.com (Global: 5,614^th place; English: 2,716^th place)

"O2 Extends England Rugby Sponsorship Again". England Rugby. 20 November 2025. Retrieved 20 November 2025.

ft.com (Global: 193^rd place; English: 127^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: 64^th place; English: 28^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.

gov.uk (Global: 401^st place; English: 228^th place)

"CK Hutchison / Telefonica Europe (O2 UK) merger". 11 May 2016 [Originally published 16 September 2015].
"CMA requests UK review of O2/Three merger". Competition and Markets Authority (Press release). 2 October 2015.

independent.co.uk (Global: 46^th place; English: 29^th 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)

"O2 Bubbles". Jonathan Knowles Photography & Film. Retrieved 26 May 2026.

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

"UK mobile spectrum allocation". Mast Database. Retrieved 27 January 2024.

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

"O2: NFC is ready to launch". Mobile News. 15 July 2009. Retrieved 26 May 2026.
"O2 aims to be UK's first carbon-neutral operator by 2025". Mobile News. 3 March 2020. Retrieved 10 November 2025.

musicweek.com (Global: 2,206^th place; English: 1,263^rd 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: 718^th place; English: 414^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)

news.o2.co.uk

Contact us, O₂ corporate website Archived 15 August 2017 at the Wayback Machine. Retrieved: 6 December 2012.
"Introducing the Mobile Wallet" (Press release). O2. 23 February 2011. Archived from the original on 16 October 2012.
"O2 unveils its new brand campaign: 'More for you'". O2. 2 June 2016. Retrieved 16 June 2018.

o2.co.uk

"Virgin Media and O2 Partnership". O2. Retrieved 1 June 2021.
"Terms and Conditions | Privacy Policy". O2. Retrieved 1 June 2021.
"WiFi and 4G Calling: everything you need to know". O2.

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

"O2 enters UK broadband market with purchase of Be". O2 (Press release). Archived from the original on 17 June 2010.

ofcom.org.uk (Global: 5,969^th place; English: 3,088^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.

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: 38^th place; English: 30^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: low place)

cntr.salford.ac.uk

"Analogue Mobiles - 1G". Computer Networking and Telecommunications Research. 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: 40^th place; English: 27^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: 8,360^th place; English: 4,596^th place)

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

theguardian.com (Global: 16^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: 1,877^th place; English: 1,233^rd 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. Retrieved 10 November 2025.

virginmedia.com (Global: 8,369^th place; English: 5,162^nd 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 2025 Earnings Release" (PDF). Virgin Media O2. 19 February 2025. p. 5. Retrieved 19 February 2025. Mobile, Retail Connections, Mobile 22,430,300
"O2's Head of Home & Broadband Felix Geyr talks about O2 & fibre". O2. 28 June 2011. Retrieved 26 May 2026.
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.
"O2 enters UK broadband market with purchase of Be". O2 (Press release). Archived from the original on 17 June 2010.
Prodhan, Georgina (2 September 2008). "O2 finds mobile payments popular". Reuters. Archived from the original on 26 March 2010. Retrieved 2 October 2010.
"Introducing the Mobile Wallet" (Press release). O2. 23 February 2011. Archived from the original on 16 October 2012.

worldcat.org (Global: 4^th place; English: 4^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: 11th place; English: 10th place)

bbc.co.uk

news.bbc.co.uk

bbc.com (Global: 26th place; English: 23rd 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: 5,186th place; English: 2,756th place)

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

companieshouse.gov.uk (Global: 3,815th place; English: 2,179th place)

beta.companieshouse.gov.uk

company-information.service.gov.uk (Global: 1,947th place; English: 1,052nd place)

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

digitalspy.co.uk (Global: 441st place; English: 237th place)

englandrugby.com (Global: 5,614th place; English: 2,716th place)

ft.com (Global: 193rd place; English: 127th place)

ghostarchive.org (Global: 64th place; English: 28th place)

gov.uk (Global: 401st place; English: 228th place)

independent.co.uk (Global: 46th place; English: 29th place)

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

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

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

musicweek.com (Global: 2,206th place; English: 1,263rd place)

nationalarchives.gov.uk (Global: 718th place; English: 414th place)

webarchive.nationalarchives.gov.uk

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

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

news.o2.co.uk

o2.co.uk

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

ofcom.org.uk (Global: 5,969th place; English: 3,088th place)

consumers.ofcom.org.uk

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

reuters.com (Global: 38th place; English: 30th place)

reuters.com

uk.reuters.com

salford.ac.uk (Global: low place; English: low 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: 40th place; English: 27th place)

thedrum.com (Global: 8,360th place; English: 4,596th place)

theguardian.com (Global: 16th place; English: 11th place)

theregister.co.uk (Global: 1,877th place; English: 1,233rd place)

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

virginmedia.com (Global: 8,369th place; English: 5,162nd 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: 4th place; English: 4th place)

search.worldcat.org

bbc.co.uk (Global: 11^th place; English: 10^th place)

bbc.com (Global: 26^th place; English: 23^rd place)

campaignlive.co.uk (Global: 5,186^th place; English: 2,756^th place)

companieshouse.gov.uk (Global: 3,815^th place; English: 2,179^th place)

company-information.service.gov.uk (Global: 1,947^th place; English: 1,052^nd place)

digitalspy.co.uk (Global: 441^st place; English: 237^th place)

englandrugby.com (Global: 5,614^th place; English: 2,716^th place)

ft.com (Global: 193^rd place; English: 127^th place)

ghostarchive.org (Global: 64^th place; English: 28^th place)

gov.uk (Global: 401^st place; English: 228^th place)

independent.co.uk (Global: 46^th place; English: 29^th place)

musicweek.com (Global: 2,206^th place; English: 1,263^rd place)

nationalarchives.gov.uk (Global: 718^th place; English: 414^th place)

ofcom.org.uk (Global: 5,969^th place; English: 3,088^th place)

reuters.com (Global: 38^th place; English: 30^th place)

telegraph.co.uk (Global: 40^th place; English: 27^th place)

thedrum.com (Global: 8,360^th place; English: 4,596^th place)

theguardian.com (Global: 16^th place; English: 11^th place)

theregister.co.uk (Global: 1,877^th place; English: 1,233^rd place)

virginmedia.com (Global: 8,369^th place; English: 5,162^nd place)

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

worldcat.org (Global: 4^th place; English: 4^th place)