The BBFC is the independent British Board of Film Classification that has been classifying films since 1912 and videos/DVDs since 1984. Examiners review films and assign age ratings based on content involving issues like discrimination, drugs, horror, violence and sex. Films are rated U, PG, 12A, 12, 15 or 18 with restrictions on who can view depending on the rating. The BBFC has the power to ban films that may cause harm or if their content is in conflict with UK law. For the film The Descent, the BBFC took a lenient approach by not explicitly showing the death of a child character, allowing it to receive a 15 rating rather than an 18.