In Media, our teacher also mentioned OFCOM, which I had heard of but I wasn't sure about what they are and what they do. So, here's some research I did about them!
OFCOM is the communication regulator in the UK. They regulate the TV and radio sectors, fixed line telecoms, mobiles, postal services, plus the airwaves over which wireless devices operate. They also make sure that the population of the UK get the best from their communication services and are protected from scams. 
Their main legal duties are to ensure that:

• the UK has a wide range of electronic communications services, including high-speed services such as broadband
• a wide range of high-quality television and radio programmes are provided, appealing to a range of tastes and interests
• television and radio services are provided by a range of different organisations;
• people who watch television and listen to the radio are protected from harmful or offensive material
• people are protected from being treated unfairly in television and radio programmes, and from having their privacy invaded
• a universal postal service is provided in the UK - this means a six days a week, universally priced delivery and collection service across the country
• the radio spectrum (the airwaves used by everyone from taxi firms and boat owners, to mobile-phone companies and broadcasters) is used in the most effective way