Ofcom is the UK communications regulator. Ofcom regulates TV, radio and video-on-demand sectors, fixed-line telecoms, mobile phones and postal services, plus the airwaves over which wireless devices operate. Ofcom operates under a number of Acts of Parliament, particularly the Communications Act 2003 and the Wireless Telegraphy Act 2006. It also has powers to enforce competition law alongside the Competition and Markets Authority.
For further information see: Ofcom.org.uk