O2
The site of a major UK mobile network with plans, priority perks and devices.
O2 at a glance
O2 is a technology website and one of the most visited sites in United Kingdom, currently ranked #179 in the country. It was founded in 2002 by BT Cellnet and is headquartered in Slough, UK. Today O2 is owned by Virgin Media O2. Our estimates put its audience at ≈ 30 million visits per month. The business earns money mainly through mobile subscriptions, device sales. Its closest rivals include ee.co.uk, vodafone.co.uk, three.co.uk.
Traffic statistics
Traffic history
| Period | Visits | Change |
|---|---|---|
| Q1 | ≈ 28.2 million / month | +2% |
| Q2 | ≈ 29.1 million / month | +3% |
| Q3 | ≈ 30 million / month | +3% |
| Q4 | ≈ 31.8 million / month | +6% |
Traffic sources
- Direct56%
- Organic search27%
- Referral9%
- Social5%
- Paid3%
Audience & demographics
- Men57%
- Women43%
- Age 25-3432%
- Age 35-4424%
- Age 18-2421%
The audience is concentrated in United Kingdom, skewing urban and mobile, with usage peaks in the evening hours.
Geographic reach
- United Kingdom86%
Home market
- Diaspora and neighbouring markets7%
- Europe3%
- North America2%
- Rest of world2%
SEO profile
- Estimated organic traffic
- ≈ 9 million visits / month
- Branded share of search
- High — brand terms lead the keyword profile
- Indexed pages
- Large — category, listing or article level
- Primary search market
- United Kingdom
Top organic keywords
| Keyword | Position | Volume | Traffic share |
|---|---|---|---|
| o2 | 1 | Very high | Dominant |
| login | Top 10 | High | — |
| app download | Top 10 | High | — |
| pricing | Top 10 | High | — |
Backlink profile
- Referring domains
- Tens of thousands
- Link profile
- News coverage, directories, blogs and partner sites
- Authority
- High within the United Kingdom web
Top referral sources
- News and media31%
- Directories and aggregators24%
- Blogs and forums20%
- Partner sites14%
- Other11%
Technology stack
Website technologies
Advertising & analytics technologies
Stack details are inferred from public front-end signals and engineering communications; internal systems may differ.
Mobile app statistics
Available in the local store
Available in the local store
- App share of traffic
- ≈ 68% mobile
- Position in country
- Among the leading technology apps in United Kingdom
Company information
- Website
- o2.co.uk
- Sector
- Technology
- Owner
- Virgin Media O2
- Owner type
- Private company
- Founders
- BT Cellnet
- Founded
- 2002
- Headquarters
- Slough, UK
- Employees
- 10,000+
- Ownership
- Virgin Media O2 controls the platform. Ownership details are based on public filings and press reporting.
- Revenue
- ≈ $8 billion annual revenue (est.)
- Languages
- English
- Top traffic sources
- direct, organic search, referral
Financials
- Revenue
- ≈ $8 billion annual revenue (est.)
- Ownership
- Private company
- Reporting
- Figures based on public filings, press reports and market estimates
Business model & revenue
O2 operates a technology platform focused on United Kingdom. The site of a major UK mobile network with plans, priority perks and devices. Revenue comes mainly from mobile subscriptions, supported by the other lines listed below.
- Mobile subscriptions
- Device sales
Products & services
Related deals on Amazon
As an Amazon Associate, Global Site Index earns from qualifying purchases.
International presence
- Primary market
- United Kingdom
- Expansion
- Regional and diaspora audiences beyond the home market
Employee statistics
Customer statistics
Website rankings
- Country rank (United Kingdom)
- #179 in this index
- Sector rank
- Leading technology site in United Kingdom
- Global rank
- 2500
Main competitors
Website comparisons
| Website | Monthly visits | Rank | Notes |
|---|---|---|---|
| ee.co.uk | ≈ 18 million / month | #180 class competitor | — |
| vodafone.co.uk | ≈ 13.5 million / month | #181 class competitor | — |
| three.co.uk | ≈ 9 million / month | #182 class competitor | — |
What is O2?
O2 (o2.co.uk) is a technology platform serving users in United Kingdom. The site of a major UK mobile network with plans, priority perks and devices. It ranks #179 among the most visited websites in the country in this index, within the technology category.
Who owns O2?
The site is operated by Virgin Media O2, founded by BT Cellnet. The company was established in 2002 and is headquartered in Slough, UK. It employs around 10,000+.
Traffic and audience
Traffic estimates place O2 at roughly 30 million visits per month, about 1 million per day. Around 68% mobile of sessions come from mobile devices, and visitors view about 5.6 pages per visit with an average session of 5 min.
How O2 makes money
Revenue comes primarily from mobile subscriptions, alongside device sales.
Competitors in United Kingdom
Its closest rivals include ee.co.uk, vodafone.co.uk, three.co.uk.
Data and accuracy
Company facts are drawn from public sources. Traffic, revenue and audience figures are third-party estimates or sector benchmarks, marked with ≈ where modelled, and are reviewed periodically.
Company history & milestones
- 2002
O2 is founded in Slough, UK.
- Growth phase
Expands its technology offering and moves to a mobile-first product.
- Today
Ranks #179 among the most visited websites in United Kingdom.
User reviews & ratings
| Source | Score | Reviews | Notes |
|---|---|---|---|
| Google Play | ≈ 4.3 / 5 | — | Ratings from the local store listing |
| App Store | ≈ 4.5 / 5 | — | Ratings from the local store listing |
| Consumer review platforms | Mixed | — | Service and support are common themes |
App store ratings are solid, while consumer review platforms show the usual friction around support and service quality.
Pros & cons
Pros
- Fast, reliable core product used daily
- Deep local language and market support
- Strong developer and integration ecosystem
- Free tier with broad reach
Cons
- Data collection and privacy questions from advertising
- Feature set can be complex for new users
- Limited direct customer support
- Dependence on advertising revenue
Key statistics
Frequently asked questions
Who owns O2?
O2 is operated by Virgin Media O2. Private company structure, based on public filings and press reporting.
Where is O2 headquartered?
O2 is headquartered in Slough, UK.
When was O2 founded?
O2 was founded in 2002 by BT Cellnet.
How many employees does O2 have?
O2 employs approximately 10,000+ people.
What is O2's revenue?
O2's revenue: ≈ $8 billion annual revenue (est.).
Who are O2's competitors?
Main competitors in United Kingdom include ee.co.uk, vodafone.co.uk, three.co.uk.
How does O2 make money?
Mainly mobile subscriptions, device sales.
Is O2 publicly traded?
No — O2 is not listed as an independent public company; it is operated by Virgin Media O2.
How many visitors does O2 get?
Third-party estimates place O2 at roughly 30 million visits per month, mostly from United Kingdom, with 68% mobile traffic.
Is O2 safe?
O2 is an established technology site founded in 2002 and ranked #179 in United Kingdom; use the official domain o2.co.uk and HTTPS.
Popular searches
Data sources & confidence
- Company website and public announcementso2.co.uk
- Third-party traffic estimation providersSimilarweb-class estimates
Visit figures are modelled, not measured
- App store listingsApple App Store, Google Play
- Press and market coverageUnited Kingdom and international business media
- Data confidence
- Medium for company facts, medium-low for traffic and financial estimates. All modelled figures are rounded and marked with ≈.
- Last updated
- September 2026
Traffic, revenue and audience figures are third-party estimates or derived from sector benchmarks, and are reviewed periodically.
Social media profiles & statistics
Official brand account
Announcements and support
Community and campaigns
Company and hiring updates
Brand and product videos