Company profile
O2 (Telefónica UK)
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- Industry
- Telecommunications
- Employees
- 5,378
- Headquarters
- Reading, England
- LinkedIn followers
- 124,790
- Office locations
- 1
O2 (Telefónica UK) company summary
O2 (Telefónica UK) is a company in the Telecommunications industry, headquartered in Reading, England. On LinkedIn the company has around 5,378 employees and 124,790 followers. Warmrank detected 25 technologies across 16 categories on o2.co.uk, including AWIN, Adjust, Azure. Its listed specialties include Telecoms, Data Network, Roaming, Fixed Line, Mobile Landline.
What technology does O2 (Telefónica UK) use?
Warmrank detected 25 technologies on o2.co.uk, last checked July 2026. Click any tool to see other companies that use it.
Adjust
Facebook Pixel
Google Analytics
Linkedin Insight TagMiscellaneous
HTTP/3
Open Graph
Webpack
Microsoft Advertising
Next.js
React
DigiCert
ThawteAffiliate programs
AWIN
Google Cloud CDNEcommerce
Cart FunctionalityIaaS
Google CloudLoad balancers
Azure Front DoorPaaS
AzurePerformance
Priority HintsProgramming languages
Node.jsRetargeting
RTB HouseSecurity
Show 1 more technologiesShow fewer technologies
Tag managers
Google Tag ManagerAbout O2 (Telefónica UK)
O2 is the commercial brand of Telefónica UK Limited and is a leading digital communications company with the highest customer satisfaction for any mobile provider according to Ofcom. With over 23 million customers, O2 runs 2G, 3G, 4G and 5G networks across the UK, as well as operating O2 Wifi and owning half of Tesco Mobile. O2 has over 450 retail stores and sponsors The O2, O2 Academy venues and the England rugby team. Read more about O2 at http://www.o2.co.uk/news. We believe that by thinking big we will create new possibilities for people and the planet. If you believe anything is possible and if you like to make things happen, then this is the place.
Specialties
Where is O2 (Telefónica UK) located?
O2 (Telefónica UK) lists 1 location.
Compare companies similar to O2 (Telefónica UK)
More companies in Telecommunications.
| Company | Industry | Employees | Founded | Headquarters |
|---|---|---|---|---|
O2 (Telefónica UK) o2.co.uk | Telecommunications | 5,378 | - | Reading, England |
Huawei huawei.com | Telecommunications | 140,916 | - | Shenzhen, Guangdong |
 Ericsson ericsson.com | Telecommunications | 107,360 | 1876 | Kista, Stockholm, SE |
Nokia nokia.com | Telecommunications | 101,274 | - | Espoo, Southern Finland |
 airtel airtel.com | Telecommunications | 100,086 | - | Gurgaon, Haryana |
 Jio jio.com | Telecommunications | 100,232 | 2010 | Navi Mumbai, Maharashtra |
 AT&T att.com | Telecommunications | 194,600 | - | Dallas, TX |
 Vivo (Telefônica Brasil) vivo.com.br | Telecommunications | 40,850 | 1998 | São Paulo, SP |
 stc stc.com.sa | Telecommunications | 18,282 | 1998 | Riyadh, Riyadh |
 Orange orange.com | Telecommunications | 147,006 | - | Issy-les-Moulineaux, Île-de-France |
 Claro Brasil claro.com.br | Telecommunications | 43,506 | - | São Paulo, SP |
Frequently asked questions about O2 (Telefónica UK)
What does O2 (Telefónica UK) do?
O2 is the commercial brand of Telefónica UK Limited and is a leading digital communications company with the highest customer satisfaction for any mobile provider according to Ofcom. With over 23 million customers, O2 runs 2G, 3G, 4G and 5G networks across the UK, as well as operating O2 Wifi and owning half of Tesco Mobile. O2 has over 450 retail stores and sponsors The O2, O2 Academy venues and the England rugby team. Read more about O2 at http://www.o2.co.uk/news. We believe that by thinking big we will create new possibilities for people and the planet. If you believe anything is possible and if you like to make things happen, then this is the place.
What technology does O2 (Telefónica UK) use?
Warmrank detected 25 technologies on o2.co.uk, including AWIN, Adjust, Azure, Azure Front Door, Cart Functionality, DigiCert, Facebook, Facebook Pixel.
How many employees does O2 (Telefónica UK) have?
O2 (Telefónica UK) has around 5,378 employees on LinkedIn.
Where is O2 (Telefónica UK) headquartered?
O2 (Telefónica UK) is headquartered in Reading, England.
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