Ex Telegraph development director Shaun Gregory, who was replaced as UK head of ad-funded mobile network Blyk last month, is surfacing again to lead O2’s new advertising and media unit. At O2, Gregory will develop opportunities across mobile, online, email, in-store and direct marketing, MediaWeek says. He starts in March. Gregory joined The Telegraph from Emap Radio in 2006, before joining upstart Blyk a year later.