Getting interviews can be difficult if subjects are sensitive or with important figures due to busy schedules. Interviews may also reflect biased opinions depending on who is interviewed, such as a soldier being biased about footballer wages. Ofcom has rules to protect viewers, including ensuring factual accuracy and truth in programming, appropriate labeling of reconstructions, guidelines for secret filming, requiring approval for payments, obtaining informed consent from contributors, and considering welfare and consent for those under 18. Fairness, privacy, offensive material, commercial references, and sponsored programs also require legal guidance.