The BBFC classifies films in the UK based on their age ratings. Films featuring drug use, violence, or other mature content receive higher age ratings to indicate that younger audiences may find the content unsuitable or disturbing. The BBFC was established in 1912 and uses universal symbols to easily communicate a film's rating. OFCOM regulates television broadcasting in the UK to ensure programming is suitable for audiences of all ages and complies with their codes of conduct. One measure is the watershed at 9pm, after which more adult content can air but must not be broadcast before when children may be watching.