Ronan Dunne

CEO

O2

Ronan Dunne was appointed Chief Executive Officer of Telefónica UK (O2) and member of Telefónica Europe’s Executive Committee on 1 January 2008. Ronan became a member of the Telefónica SA Executive Committee in March 2014.

Ronan was previously Chief Financial Officer in the UK, a position held since February 2005. He served as Head of Finance and deputy to the Group Chief Financial Officer of O2 plc. from 2001 to 2005.

Prior to joining O2 in 2001, he held senior positions in Banking with Banque Nationale de Paris and in the Corporate sector with Exel plc. and Waste Management International plc.
Ronan is a non-executive director of Tesco Mobile, Telefónica's highly successful mobile joint venture with Tesco plc. He is also a non-executive director of the Guardian Media Group (GMG) and AVG Technologies. Ronan serves as a trustee of Step Up to Serve, the UK national youth social action campaign.
Ronan is a fellow and former council member of the Chartered Accountants Ireland (CAI) and a fellow of the Association of Corporate Treasurers (ACT). He was born in Dublin in 1963 and moved to the UK in 1987.