Llewellyn and the Mobile Media and Advertising team will also be responsible for developing harmonised advertising and direct marketing propositions across both the Orange and T-Mobile brands.
Llewellyn joins Everything Everywhere with 30 years of experience in planning, buying and selling commercial inventory for some of the world's largest entertainment corporations, including ITV, Channel 4, Viacom and WPP.
In addition to managing media strategies for international, blue-chip advertisers he was Group Sales Director for MTV Europe responsible for marketing airtime sales across the UK and Europe. Llewellyn was also the Commercial Launch Director for VH-1 before going on to co-found Newsplayer.
Speaking about the announcement, Gerry McQuade, Chief Development Officer, for Everything Everywhere, said: “The development of innovative advertising and media campaigns to support revenue growth is absolutely key to Everything Everywhere. Barry joins us with a wealth of experience, and we are confident that the mobile advertising and media propositions grow and develop through the contribution of his vision and expertise.”