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
Legal monopoly sometimes call the system a legal monopoly anyway. The creation of Sirius XM Radio by merger left the United States with only one licensed satellite radio broadcasting company. However, the United States Department of Justice decided that this was not harmful to competition, due to the presence of terrestrial broadcasters. Legal monopoly A legal monopoly, statutory monopoly, or "de jure" monopoly is a monopoly that is protected by law from competition. A statutory monopoly may take the form of a government monopoly where the state owns the particular means of production or government-granted monopoly where a private interest is protected