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
Intermountain West Communications Company to Sinclair that holds the licenses, with Sinclair operating the stations through joint operations and shared services agreements. The sale was approved on September 22, 2017, and completed on January 9, 2018. Notes: Note: Intermountain West Communications Company Intermountain West Communications Company is a defunct American telecommunications company, formerly owned by James E. Rogers (1938–2014), that remains as the licensee company for a number of local television stations in the United States, operated by Sinclair Broadcast Group and subsidiary companies Howard Stirk Holdings and Cunningham Broadcasting. Headquartered in Las Vegas, Nevada, IWCC was founded on October 1, 1979, following the