Institutional investor contacts

The following contact details are for institutional investors and financial analysts only.

John Crosse, Investor Relations Manager

Telephone: +44 (0)1753 628198

Email: investors@o2.com

By post:

Telefónica O2 Europe plc
Investor Relations
O2
Wellington Street
Slough
Berkshire
SL1 1YP

Private shareholder contacts:

For questions relating to former private share holdings in O2 plc, visit our private shareholder contact information.

Customer service:

Comprehensive online support and the contact details for our customer service teams are available on the websites of our local operating businesses. Please use our Contact us page to access these details.

The customer service centre, for UK based customers, can be contacted at: 0870 5214 000 or, online at www.o2.co.uk/help

Other Telefónica O2 Europe plc departments:

Can be contacted via our switchboard at: +44(0)113 272 2000.