O2 (UK) Telefónica O2 had a long-standing relationship with Arsenal F.C., being their shirt sponsor until the end of the 2005/2006 season. In 2005, a three-year deal was signed that saw Telefónica O2 become the team's exclusive mobile communications partner. O2 were the main sponsor of the Channel 4 reality TV show "Big Brother" from its second series (as BT Cellnet) in 2001 until its fourth series in 2003. They also sponsored the spin-off shows "Celebrity Big Brother 2" in 2002 and "" in 2003. In total O2 sponsored five series of the show. O2 sponsored music festivals, the Wireless Festivals, from
CMP Technology Service Mark 'WEB 2.0'. In 1971, Gerard "Gerry" Leeds and his wife, Lilo, founded the company. Their sons Michael and Daniel managed the company in 1988, and launched TechWeb. CMP was sold to United Business Media's Miller Freeman in 1999 and in 2000, the IT portion of Miller Freeman was merged into CMP. In 2008, UBM broke CMP into pieces. "Today, the name is gone and what's left of the company is part of the British media conglomerate, UBM plc," according to Newsday. Recent acquisitions include Semiconductor Insights, LightReading, MediaLive International, Black Hat and Shorecliff Communications. CMP Technology CMP Technology