- 1985 (originally ‘Cellnet’ in the UK) / 2006 – present (Telefónica Europe plc)
Customers service address:
- Telefonica UK Limited Correspondence Department
- PO Box 202
- Houghton Regis
- LU6 9AG
Customer Service Telephone Number:
- 0844 809 0202 (or 202 from your O2 handset)
- Telefónica Europe plc is a European based telecommunications company that trades as O2 in the UK. The company derives from a number of companies from are the world, known in the UK in the 1990s as BT Wireless and Genie Internet, both subsidiaries of British Telecommunications.
- Telefónica Europe is a main player in the mobile and landline telecommunications services across Europe. With operations in the United Kingdom, Ireland, the Czech Republic, Germany and Slovakia.
- Back in 2005, O2 agreed to be taken over by telecommunications company Telefónica, a Spanish company offering £17.7 billion in cash (equivalent of £2 per share). O2 is now a wholly owned subsidiary of Telefónica, but retains the name O2 in the UK and is registered as a U.K. registered public company.