The document discusses the role and responsibilities of OFCOM, the communications regulator in the UK. It outlines how OFCOM was established in 2002 by merging several previous regulators. OFCOM regulates television, radio, telecommunications and postal industries. It is responsible for ensuring broadcasters comply with their licenses and investigates complaints from the public. The document then summarizes four case studies where OFCOM had to investigate complaints and issues penalties or warnings to broadcasters.