Telefonica UK Limited

Trading as O2

Registration number: 01743099.

O2 are the second largest mobile phone network provider in the UK. Formed in 1985 as Cellnet, then renamed to BT Cellnet, then O2 it is now owned by Spanish telecommunications provider Telefónica.

 O2 complaints contacts

 Comments

Use this comments section to discuss problems you have had with O2, or how they have handled your complaints. Initial complaints should be directed to O2 directly. You can find contact details for O2 above.

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