Ofcom is the communications regulator in the UK that regulates TV, radio, telecoms, and wireless devices to ensure consumers get the best services and are protected from scams. It operates under the Communications Act of 2003 and its main duties are to further the interests of citizens and consumers. Ofcom deals with responsibilities like complaints, licensing, protections, and consultations related to broadcasting. It defines the watershed as being between 8pm-5:30am, when more adult content can air, and has strict rules around protecting viewers under 18 from offensive language, drug depictions, and inappropriate content in pre-watershed trailers. The watershed time has changed in the past due to complaints about certain programs.