BBC Radio 1. Advances in digital radio technology have enabled the launch of several new stations by the Corporation. Rather than operating as independent entities, many commercial local radio stations are owned by large radio groups which broadcast a similar format to many areas. The largest operator of radio stations is Global Radio, owner of the major Heart, Smooth and Capital radio brands. It also owns Classic FM, Smooth Radio and Radio X. Other owners are Wireless Group and Bauer Radio. There are a number of licensed community radio stations which broadcast to local audiences. Television The United Kingdom has no analogue television. A free to air digital service is made up of two chartered public broadcasting companies, the BBC and Channel 4 and two franchised commercial television companies, (ITV and Channel 5) specializing in entertainment, drama, arts, science, nature, documentary, sports, comedy etc. In addition to this, the United Kingdom's free-to-air Freeview service runs a large number of entertainment, music, sport and shopping channels from the likes of CBS, UKTV and Sky. There are five major nationwide television channels: BBC One, BBC Two, ITV, Channel 4 and Channel 5 — currently transmitted by digital terrestrial, free-to-air signals with the latter three channels funded by commercial advertising. The vast majority of digital cable television services are provided by Virgin Media with satellite television available from Freesat or Sky and free-to-air digital terrestrial television by Freeview. The entire country switched to digital (from a previously analogue signal) in 2012. The BBC operates several television channels in the United Kingdom and abroad. The BBC's international television news service, BBC World News, is broadcast throughout the world. The domestic services of the BBC are funded by the television licence and not only operates BBC One and BBC Two, but also BBC Four, the BBC News, BBC Parliament and children's television channels CBBC and CBeebies. The international television broadcast services are operated by BBC Studios on a commercial subscription basis over cable and satellite services. This commercial arm of the BBC also owns UKTV. Channel 4 is similarly chartered to the BBC, with a remit to provide public service broadcasting and schools programs, however it runs commercial advertisements to provide a revenue stream. It produces a number of digital channels, branded as Channel 4, as well as More4 and Film4. The commercial operators rely on advertising for their revenue, and are run as commercial